| Manufacturer  | Model  | Category  | Sub-Category  | Date   |
| | | | | |
 | Unilever Computer Services Ltd. (UCSL) | Husky | | | 1970s |
| | M45 | | | 1978 |
| | M50 | | | 1978 |
| | | | | |
 | Uniq Technology, Inc. | Uniqorn | | | 1990s |
| | | | | |
 | University of Chinese Academy of Sciences - Institute of Automation | C-4 (dev) | | | 1972 |
| | | | | |
 | University of Waterloo | MCS-48 | | | 1980s |
| | | | | |
 | Ulyanovsk Plant Radiolampovy (URLZ) | KR-05 | Home computer | ZX clone | 1990s |
| | | | | |
 | Unisonic Products Corp. | Futura 8300 | Home computer | ZX clone | 1980s |
| | | | | |
 | United Polish British (Unipolbrit) (-> PPZ Polbrit) | UK-2086 | Home computer | | 1986 |
| | | | | |
 | Unitron Eletrônica Ltda. | AP-II | Home computer | Apple 2 clone | 1982 |
| | AP-II TI | Home computer | Apple 2 clone | 1984 |
| | Unitron 2200 | Home computer | Apple 2 clone | 1983 |
| | Unitron II | Home computer | Apple 2 clone | 1983 |
| | | | | |
 | Unitronics | Sonic | Home computer | Apple 2 clone | 1983 |
| | | | | |
 | Universitatea de Vest | TimS | Home computer | | 1990s |
| | | | | |
 | Universum (div. Quelle) | CompuMate | Home computer | | 1983 |
| | | | | |
 | Ural Optical & Mechanical Plant (UOMZ) | Qvarum | Home computer | ZX clone | 1990s |
| | Ural-48 | Home computer | ZX clone | 1990s |
| | | | | |
 | Urals Production Association VEKTOR | 64 | Home computer | ZX clone | 1985 |
| | 128 | Home computer | ZX clone | 1985 |
| | 128+ | Home computer | ZX clone | 1986 |
| | Kvorum 48K | Home computer | ZX clone | 1993 |
| | Kvorum BK05 | Home computer | ZX clone | 1990s |
| | Spectrum | Home computer | ZX clone | 1984 |
| | | | | |
 | Uwe Schneider GmbH | Milan 040 | Home computer | Atari TT clone | 1997 |
| | Milan 060 | Home computer | Atari TT clone | 1999 |
| | | | | |
 | Ulyanovsk Volodarskii Plant | BESM-4 | Mainframe | | 1964 |
| | | | | |
 | Underwood Corp. | Elecom 100 | Mainframe | Early | 1952 |
| | Elecom 120 | Mainframe | Early | 1956 |
| | Elecom 120A | Mainframe | Early | 1954 |
| | Elecom 125 | Mainframe | Early | 1955 |
| | Elecom 125 FP | Mainframe | Early | 1956 |
| | ORDFIAC (aka ELECOM 200) | Mainframe | Early | 1953 |
| | | | | |
 | Unidata | 7.720 (by Philips) | Mainframe | | 1974 |
| | 7.730 (by Siemens) | Mainframe | | 1974 |
| | 7.740 (by CII) | Mainframe | | 1974 |
| | 7.750 (by Siemens) | Mainframe | | 1974 |
| | | | | |
 | Unisys Corp. | 1100/91 II | Mainframe | | 1987 |
| | 1100/91 II SV | Mainframe | | 1988 |
| | 1100/91 Model II | Mainframe | | 1987 |
| | 1100/91 SV Model II | Mainframe | | 1988 |
| | 1100/92 II | Mainframe | | 1987 |
| | 1100/92 II SV | Mainframe | | 1988 |
| | 1100/92 Model II | Mainframe | | 1987 |
| | 1100/92 SV | Mainframe | | 1985 |
| | 1100/92 SV Model II | Mainframe | | 1988 |
| | 1100/93 II | Mainframe | | 1987 |
| | 1100/93 Model II | Mainframe | | 1987 |
| | 1100/94 | Mainframe | | 1983 |
| | 1100/94 II | Mainframe | | 1987 |
| | 1100/94 Model II | Mainframe | | 1987 |
| | 1100/94 Model II Turbo | Mainframe | | 1988< |
| | 1100/94II Turbo | Mainframe | | 1989 |
| | 2200/100 | Mainframe | | 1990 |
| | 2200/111 | Mainframe | | 1990 |
| | 2200/121 | Mainframe | | 1990 |
| | 2200/200 | Mainframe | | 1986 |
| | 2200/201 | Mainframe | | 1987 |
| | 2200/202 | Mainframe | | 1987 |
| | 2200/203 | Mainframe | | 1987 |
| | 2200/204 | Mainframe | | 1987 |
| | 2200/300 | Mainframe | | 1995 |
| | 2200/3800 | Mainframe | | 1997 |
| | 2200/400 | Mainframe | | 1988 |
| | 2200/401 | Mainframe | | 1988 |
| | 2200/402 | Mainframe | | 1988 |
| | 2200/403 | Mainframe | | 1988 |
| | 2200/404 | Mainframe | | 1988 |
| | 2200/405 | Mainframe | | 1988 |
| | 2200/406 | Mainframe | | 1989 |
| | 2200/442 | Mainframe | | 1992 |
| | 2200/462 | Mainframe | | 1992 |
| | 2200/500 | Mainframe | | 1993 |
| | 2200/600 | Mainframe | | 1989 |
| | 2200/611 | Mainframe | | 1989 |
| | 2200/611ES | Mainframe | | 1990 |
| | 2200/622ES | Mainframe | | 1990 |
| | 2200/633ES | Mainframe | | 1990 |
| | 2200/644 | Mainframe | | 1989 |
| | 2200/644ES | Mainframe | | 1990 |
| | 2200/900 | Mainframe | | 1992 |
| | 2200/92 | Mainframe | | 1992 |
| | 2200/93 | Mainframe | | 1992 |
| | 2200/94 | Mainframe | | 1992 |
| | A-11/211 | Mainframe | | 1992 |
| | A-11/222 | Mainframe | | 1992 |
| | A-11/411 | Mainframe | | 1992 |
| | A-11/422 | Mainframe | | 1992 |
| | A-12 | Mainframe | | 1986 |
| | A-12/211 | Mainframe | | 1990 |
| | A-12/311 | Mainframe | | 1990 |
| | A-12/411 | Mainframe | | 1990 |
| | A-12/511 | Mainframe | | 1990 |
| | A-12B | Mainframe | | 1989 |
| | A-12E | Mainframe | | 1986 |
| | A-12L | Mainframe | | 1988< |
| | A-12T | Mainframe | | 1988 |
| | A-15F | Mainframe | | 1985 |
| | A-15FX | Mainframe | | 1987 |
| | A-15H | Mainframe | | 1985 |
| | A-15HX | Mainframe | | 1987 |
| | A-15I | Mainframe | | 1985 |
| | A-15IX | Mainframe | | 1987 |
| | A-15J | Mainframe | | 1985 |
| | A-15JX | Mainframe | | 1987 |
| | A-15K | Mainframe | | 1985 |
| | A-15KX | Mainframe | | 1987 |
| | A-15L | Mainframe | | 1985 |
| | A-15LX | Mainframe | | 1987 |
| | A-15M | Mainframe | | 1985 |
| | A-15MX | Mainframe | | 1987 |
| | A-15N | Mainframe | | 1985 |
| | A-15NX | Mainframe | | 1987 |
| | A-16/422 | Mainframe | | 1990 |
| | A-16/511 | Mainframe | | 1990 |
| | A-16/522 | Mainframe | | 1990 |
| | A-16/611 | Mainframe | | 1990 |
| | A-16/61E | Mainframe | | 1991 |
| | A-16/622 | Mainframe | | 1990 |
| | A-17 | Mainframe | | 1987 |
| | A-17F | Mainframe | | 1988 |
| | A-17H | Mainframe | | 1988 |
| | A-17J | Mainframe | | 1988 |
| | A-17L | Mainframe | | 1988 |
| | A-17N | Mainframe | | 1988 |
| | A-19/611 | Mainframe | | 1992 |
| | A-19/622 | Mainframe | | 1992 |
| | A-19/632 | Mainframe | | 1992 |
| | A-19/642 | Mainframe | | 1992 |
| | A-19/664 | Mainframe | | 1992 |
| | Clearpath Dorado 100 | Mainframe | | 2003 |
| | Clearpath Dorado 200 | Mainframe | | 2005 |
| | Clearpath Dorado 300 | Mainframe | | 2005 |
| | Clearpath Dorado 400 | Mainframe | | 2007 |
| | Clearpath Dorado 4000 | Mainframe | | 2008 |
| | Clearpath Dorado 4100 | Mainframe | | 2010 |
| | Clearpath Dorado 4200 | Mainframe | | 2012 |
| | ClearPath Dorado 430 | Mainframe | | 2007 |
| | Clearpath Dorado 4300 | Mainframe | | 2014 |
| | ClearPath Dorado 4350 | Mainframe | | 2014 |
| | ClearPath Dorado 4370 | Mainframe | | 2014 |
| | ClearPath Dorado 4380 | Mainframe | | 2014 |
| | ClearPath Dorado 4390 | Mainframe | | 2014 |
| | ClearPath Dorado 4580 | Mainframe | | 2020 |
| | ClearPath Dorado 4590 | Mainframe | | 2020 |
| | Clearpath Dorado 6300 | Mainframe | | 2014 |
| | ClearPath Dorado 6590 | Mainframe | | 2020 |
| | Clearpath Dorado 700 | Mainframe | | 2009 |
| | Clearpath Dorado 800 | Mainframe | | 2011 |
| | Clearpath Dorado 8300 | Mainframe | | 2015 |
| | ClearPath Dorado 880E | Mainframe | | 2015 |
| | ClearPath Dorado 890E | Mainframe | | 2015 |
| | ClearPath Forward Dorado 8590 | Mainframe | | 2020 |
| | ClearPath Forward FS1000 | Mainframe | | 2010s |
| | ClearPath Forward FS1770 | Mainframe | | 2014 |
| | ClearPath Forward FS2000 | Mainframe | | 2010s |
| | ClearPath Forward FS600 | Mainframe | | 2014 |
| | ClearPath Forward FS601 | Mainframe | | 2017 |
| | ClearPath Forward FS800 | Mainframe | | 2010s |
| | ClearPath Forward FS801 | Mainframe | | 2021 |
| | Clearpath IX4400 | Mainframe | | 1996 |
| | Clearpath IX4800 | Mainframe | | 1997 |
| | Clearpath IX5600 | Mainframe | | 1998 |
| | Clearpath IX5800 | Mainframe | | 1998 |
| | Clearpath IX6600 | Mainframe | | 1999 |
| | Clearpath IX6800 | Mainframe | | 1999 |
| | ClearPath Libra 4000 Series | Mainframe | | 2008 |
| | ClearPath Libra 4100 Series | Mainframe | | 2010 |
| | ClearPath Libra 4180 | Mainframe | | 2010> |
| | ClearPath Libra 4190 | Mainframe | | 2010> |
| | ClearPath Libra 4200 Series | Mainframe | | 2012 |
| | ClearPath Libra 4280 | Mainframe | | 2012> |
| | ClearPath Libra 4290 | Mainframe | | 2012> |
| | ClearPath Libra 4300 Series | Mainframe | | 2014 |
| | ClearPath Libra 4380 | Mainframe | | 2020s |
| | ClearPath Libra 4400 Series | Mainframe | | 2010s |
| | ClearPath Libra 450 | Mainframe | | 2010 |
| | ClearPath Libra 4500 Series | Mainframe | | 2019 |
| | ClearPath Libra 4501 | Mainframe | | 2021 |
| | ClearPath Libra 4580 | Mainframe | | 2020s |
| | ClearPath Libra 4590 | Mainframe | | 2020s |
| | ClearPath Libra 460 | Mainframe | | 2014 |
| | ClearPath Libra 470 | Mainframe | | 2014 |
| | ClearPath Libra 520 | Mainframe | | 2004 |
| | ClearPath Libra 590 | Mainframe | | 2004 |
| | ClearPath Libra 6200 Series | Mainframe | | 2012 |
| | ClearPath Libra 6280 | Mainframe | | 2012 |
| | ClearPath Libra 6290 | Mainframe | | 2012 |
| | ClearPath Libra 6300 Series | Mainframe | | 2015 |
| | ClearPath Libra 6400 | Mainframe | | 2017 |
| | ClearPath Libra 6500 Series | Mainframe | | 2019 |
| | ClearPath Libra 6501 | Mainframe | | 2021 |
| | ClearPath Libra 6590 | Mainframe | | 2019 |
| | ClearPath Libra 6591 | Mainframe | | 2021 |
| | ClearPath Libra 6800 | Mainframe | | 2017 |
| | ClearPath Libra 700 Series | Mainframe | | 2010 |
| | ClearPath Libra 750 | Mainframe | | 2010 |
| | ClearPath Libra 780 | Mainframe | | 2010 |
| | ClearPath Libra 790 | Mainframe | | 2010 |
| | ClearPath Libra 800 Series | Mainframe | | 2012 |
| | ClearPath Libra 8290 | Mainframe | | 2013 |
| | ClearPath Libra 8400 Series | Mainframe | | 2017 |
| | ClearPath Libra 8480 | Mainframe | | 2017> |
| | ClearPath Libra 8490 | Mainframe | | 2017> |
| | ClearPath Libra 8500 Series | Mainframe | | 2019 |
| | ClearPath Libra 8501 | Mainframe | | 2021 |
| | ClearPath Libra 8580 | Mainframe | | 2021 |
| | ClearPath Libra 8590 | Mainframe | | 2021 |
| | ClearPath Libra 8591 | Mainframe | | 2021 |
| | ClearPath Libra 880 | Mainframe | | 2012 |
| | ClearPath Libra 890 | Mainframe | | 2012 |
| | ClearPath Plus Dorado 320 | Mainframe | | 2006 |
| | ClearPath Plus Libra 180 | Mainframe | | 2002 |
| | ClearPath Plus Libra 185 | Mainframe | | 2006 |
| | ClearPath Plus Libra 580 | Mainframe | | 2006 |
| | ClearPath Plus Libra 585 | Mainframe | | 2006 |
| | ClearPath Plus Libra 590 | Mainframe | | 2006 |
| | ClearPath Plus Libra 595 | Mainframe | | 2006 |
| | ClearPath Plus Libra 690 | Mainframe | | 2006 |
| | System 80 Model 10 | Mainframe | | 1987 |
| | System 80 Model 15 | Mainframe | | 1988 |
| | System 80 Model 20 | Mainframe | | 1987 |
| | V310 | Mainframe | | 1986 |
| | V340 | Mainframe | | 1986 |
| | V380 | Mainframe | | 1985 |
| | V410 | Mainframe | | 1989 |
| | V430 | Mainframe | | 1989 |
| | V460 | Mainframe | | 1980s |
| | V510 | Mainframe | | 1988 |
| | V530 | Mainframe | | 1987 |
| | V560 | Mainframe | | 1989 |
| | | | | |
 | University of California (UC Berkeley) | MANIAC II (by Los Alamos) | Mainframe | Early | 1957 |
| | | | | |
 | University of Cambridge Mathematical Laboratory | EDSAC | Mainframe | Early | 1949 |
| | EDSAC II | Mainframe | Early | 1957 |
| | TITAN | Mainframe | | 1963 |
| | | | | |
 | University of Chinese Academy of Sciences - Institute of Automation | DJS-C4 (with Jiangsu Radio Factory) | Mainframe | | 1974 |
| | | | | |
 | University of Leningrad | MYAMLIN | Mainframe | Early | 1958 |
| | | | | |
 | University of Michigan | MIDAC | Mainframe | Early | 1953 |
| | | | | |
 | University of Pennsylvania - Moore School | EDVAC | Mainframe | Early | 1952 |
| | ENIAC | Mainframe | Early | 1947 |
| | MSAC | Mainframe | Early | 1954 |
| | PENNSTAC | Mainframe | Early | 1951 |
| | | | | |
 | University of Sidney | SNOCOM | Mainframe | Early | 1960 |
| | | | | |
 | University of Tokyo | TAC | Mainframe | Early | 1959 |
| | | | | |
 | University of Toronto | UTEC | Mainframe | Early | 1952 |
| | | | | |
 | United Technologies Corp. - Norden Division | Mk IV | Mecanical | Military | 1930s |
| | | | | |
 | U-Microcomputers Ltd. | U-COM2 system 3 | Micro | | 1986< |
| | U-Man Series 1000 | Micro | | 1985 |
| | | | | |
 | U. Klotz | MCS-40 | Micro | | 1975 |
| | | | | |
 | U.S. Design Corp. | MicroVIP | Micro | | 1986< |
| | | | | |
 | U.S. Micro Sales | S-100-8 | Micro | S-100 | 1982 |
| | | | | |
 | U.S. Robotics, Inc. (USR) | USR-1600P | Micro | | 1980 |
| | | | | |
 | Uchida-Yoko Co., Ltd. | Camarade II L | Micro | | 1987 |
| | Camarade II S | Micro | | 1987 |
| | Camarade II T | Micro | | 1987 |
| | Camarade III L | Micro | | 1988 |
| | Camarade III R | Micro | | 1988 |
| | Camarade III S | Micro | | 1988 |
| | Camarade L | Micro | | 1986 |
| | Camarade S | Micro | | 1986 |
| | Camarade T | Micro | | 1986 |
| | New Camarade (USAC 230) | Micro | | 1984 |
| | | | | |
 | Uchishiba Seisakusho, Inc. | BookcaSE | Micro | Mac clone | 1990s |
| | | | | |
 | Uj Kalász MGTSZ | RAAB 80 | Micro | | 1985 |
| | RAAB 80/A | Micro | | 1985 |
| | RAAB 84 | Micro | | 1986 |
| | RAAB 84T | Micro | | 1985 |
| | | | | |
 | Ulbrich Automation GmbH | Microcomputer 400 | Micro | | 1977< |
| | Powerhouse II | Micro | | 1981< |
| | | | | |
 | Ultimate Computer Corp. | 750 | Micro | | 1984< |
| | 1000 | Micro | | 1984< |
| | 1400 | Micro | | 1987 |
| | 1500 | Micro | | 1984 |
| | 1510 | Micro | | 1986< |
| | 2000 | Micro | | 1984< |
| | 2000S | Micro | | 1984< |
| | Chiron | Micro | | 1986< |
| | Model C/2 | Micro | | 1984< |
| | Model D/2 | Micro | | 1984< |
| | Model E/2 | Micro | | 1984< |
| | | | | |
 | UMAX Technologies, Inc. | PowerPC | Micro | Mac clone | 1990s |
| | SuperMac Aegis 200 | Micro | Mac clone | 1996 |
| | SuperMac C500/140 | Micro | Mac clone | 1996 |
| | SuperMac C500/160 | Micro | Mac clone | 1996 |
| | SuperMac C500/180 | Micro | Mac clone | 1996 |
| | SuperMac C500/240 | Micro | Mac clone | 1996 |
| | SuperMac C500e/180 | Micro | Mac clone | 1996 |
| | SuperMac C500e/200 | Micro | Mac clone | 1996 |
| | SuperMac C500e/240 | Micro | Mac clone | 1996 |
| | SuperMac C500i/180 | Micro | Mac clone | 1996 |
| | SuperMac C500i/200 | Micro | Mac clone | 1996 |
| | SuperMac C500LT/140 | Micro | Mac clone | 1996 |
| | SuperMac C500LT/180 | Micro | Mac clone | 1996 |
| | SuperMac C500LT/200 | Micro | Mac clone | 1996 |
| | SuperMac C600/160 | Micro | Mac clone | 1996 |
| | SuperMac C600/180 | Micro | Mac clone | 1996 |
| | SuperMac C600/200 | Micro | Mac clone | 1996 |
| | SuperMac C600/240 | Micro | Mac clone | 1996 |
| | SuperMac C600e/200 | Micro | Mac clone | 1996 |
| | SuperMac C600LT/240 | Micro | Mac clone | 1996 |
| | SuperMac C600vPC | Micro | Mac clone | 1996 |
| | SuperMac C600x/240 | Micro | Mac clone | 1996 |
| | SuperMac C600x/280 | Micro | Mac clone | 1996 |
| | SuperMac J700/150 | Micro | Mac clone | 1996 |
| | SuperMac J700/180 | Micro | Mac clone | 1996 |
| | SuperMac J700/233 | Micro | Mac clone | 1996 |
| | SuperMac J710/200 | Micro | Mac clone | 1996 |
| | SuperMac S900/150 | Micro | Mac clone | 1996 |
| | SuperMac S900/180 | Micro | Mac clone | 1996 |
| | SuperMac S900/180 DP | Micro | Mac clone | 1996 |
| | SuperMac S900/200 | Micro | Mac clone | 1996 |
| | SuperMac S900/200 DP | Micro | Mac clone | 1996 |
| | SuperMac S900/225 | Micro | Mac clone | 1996 |
| | SuperMac S900/233 | Micro | Mac clone | 1996 |
| | SuperMac S900/240 | Micro | Mac clone | 1996 |
| | SuperMac S900/250 | Micro | Mac clone | 1996 |
| | SuperMac S900/250 DP | Micro | Mac clone | 1996 |
| | SuperMac S900Base (w/ G3) | Micro | Mac clone | 1996 |
| | SuperMac S900i/250 | Micro | Mac clone | 1996 |
| | SuperMac S910/250 | Micro | Mac clone | 1996 |
| | SuperPulsar | Micro | Mac clone | 1988< |
| | | | | |
 | Umtech, Inc. | Videobrain | Micro | | 1978 |
| | | | | |
 | Unbound, Inc. | QUBE (Micro PDP-11 comp.) | Micro | | 1986 |
| | QUBE QV | Micro | | 1987 |
| | | | | |
 | Under-ware Electronics | 386SX | Micro (P) | Palmtop | 1993~ |
| | V30 | Micro (P) | Palmtop | 1993~ |
| | | | | |
 | Unicomp | iBEX 7000 (by SANCO) | Micro | | 1980~ |
| | | | | |
 | Unidata | Datapoint | Micro | | 1970s |
| | | | | |
 | UniPalm Ltd. | Thintune Mobile | Micro | Thin client | 2000s |
| | | | | |
 | Uniq Technology, Inc. | Unicorn 11/73 | Micro | | 1986< |
| | | | | |
 | Unique Computers International, Ltd. | U.C.I. Bilingual Computer | Micro | | 1986< |
| | | | | |
 | Unisys Corp. | ICON 2 | Micro | | 1990s |
| | MICRO-A (MA-800) | Micro | | 1989 |
| | NGen CM-004 | Micro | | 1989 |
| | NGen CP-0A2 | Micro | | 1985 |
| | NGen CP-0A3 | Micro | | 1987 |
| | NGen CP-0E2 | Micro | | 1989 |
| | NGen PHD-140 | Micro | | 1988 |
| | PW2 Series 800/16-20 | Micro | | 1987 |
| | T3143-82 | Micro | | 1980s |
| | T3143-88 | Micro | | 1980s |
| | WinPath 3200 | Micro | Thin client | 2001 |
| | WinPath 3230 | Micro | Thin client | 2001 |
| | WinPath 3360 | Micro | Thin client | 2001 |
| | | | | |
 | United Technologies Corp. - Norden Division | LSI-11M | Micro | PDP-11 comp. | 1977 |
| | | | | |
 | Unitron Eletrônica Ltda. | Mac 512 | Micro | Mac clone | 1986 |
| | PW-815 | Micro | | 1983 |
| | | | | |
 | Universal Automation, Inc. | FPS-600 | Micro (P) | Industrial | 1994< |
| | | | | |
 | Universal Data, Inc. | 2200 Series | Micro | | 1986< |
| | 2400m | Micro | | 1986< |
| | | | | |
 | Universal Research, Inc. | PortaBrain | Micro (P) | | 1983 |
| | | | | |
 | Universidade de Coimbra | ENER 1000 | Micro | | 1982 |
| | | | | |
 | Universidade Federal de Minas Gerais | MICRO 1 | Micro | | 1981< |
| | | | | |
 | Universidade Federal do Rio de Janeiro (UFRJ) | POTI | Micro | | 1981< |
| | | | | |
 | Universiti Teknologi Petronas (UTP) | Forth-1 (Forth-1 clone) | Micro | | 2000s |
| | Magic-1 | Micro | | 2000s |
| | | | | |
 | University of Illinois | DataMax UV-1 | Micro | | 1980 |
| | | | | |
 | University of Linkoping - Lysator Computer Club | LYS-16 | Micro | | 1978 |
| | | | | |
 | University of Michigan | Micro Mote (aka M3) | Micro | | 2000s |
| | | | | |
 | University of Waterloo | microWAT | Micro | | 1980 |
| | | | | |
 | US Data Corp. | RT2010 | Micro | | 1984< |
| | | | | |
 | Usha Microprocess Controls Ltd. | Eagle | Micro | | 1983< |
| | | | | |
 | Uttar Pradesh Electronics Corporation Ltd. (UPTRON) | S-1600 | Micro | | 1980s |
| | S-800 | Micro | | 1970s |
| | S-850 | Micro | | 1980s |
| | | | | |
 | Ultimacc Systems, Inc. | Champ | Minicomputer | Turnkey | 1984 |
| | Tape System | Minicomputer | | 1970 |
| | USX 39 | Minicomputer | | 1982 |
| | USX 40 | Minicomputer | | 1983 |
| | USX 43 | Minicomputer | | 1984 |
| | USX 44 | Minicomputer | | 1983 |
| | USX 46 | Minicomputer | | 1984 |
| | USX 46II | Minicomputer | | 1985 |
| | | | | |
 | Ultimate Computer Corp. | 2020 | Minicomputer | | 1985 |
| | 2030 | Minicomputer | | 1987< |
| | 3010 | Minicomputer | | 1985 |
| | 3020 | Minicomputer | | 1985 |
| | 3025 | Minicomputer | | 1985 |
| | 3030 | Minicomputer | | 1986< |
| | 3040 | Minicomputer | | 1985 |
| | 6000 | Minicomputer | | 1985 |
| | 6200 | Minicomputer | | 1985 |
| | 6400 | Minicomputer | | 1985 |
| | 6600 | Minicomputer | | 1985 |
| | 6800 (/Honeywell DPS 6) | Minicomputer | | 1985 |
| | 7000 | Minicomputer | | 1986 |
| | 7200 | Minicomputer | | 1986 |
| | 7400 | Minicomputer | | 1986 |
| | Ultivax II | Minicomputer | MicroVax comp. | 1987 |
| | | | | |
 | Ungermann-Bass Networks, Inc. | NIU-180 | Minicomputer | Communication processor | 1985 |
| | | | | |
 | Unicom, Inc. | CP-8 | Minicomputer | | 1970 |
| | CP-8A | Minicomputer | | 1970 |
| | CP-8B | Minicomputer | | 1970 |
| | CP-8C | Minicomputer | | 1970 |
| | CP-8D | Minicomputer | | 1970 |
| | | | | |
 | Unicomp, Inc. | Comp-16 | Minicomputer | | 1970 |
| | Comp-18 | Minicomputer | | 1970 |
| | | | | |
 | Unidot Systems, Inc. | Cerebra I | Minicomputer | | 1984 |
| | Cerebra II | Minicomputer | | 1984 |
| | | | | |
 | Unisys Corp. | 80-10 | Minicomputer | | 1987 |
| | 80-20 | Minicomputer | | 1987 |
| | 80-50 | Minicomputer | | 1990 |
| | A-1 | Minicomputer | | 1987 |
| | A-10D | Minicomputer | | 1986 |
| | A-10DF | Minicomputer | | 1985 |
| | A-10DX | Minicomputer | | 1986 |
| | A-10FX | Minicomputer | | 1986 |
| | A-10H | Minicomputer | | 1985 |
| | A-10HX | Minicomputer | | 1986 |
| | A-1F | Minicomputer | | 1987 |
| | A-1FX | Minicomputer | | 1980s |
| | A-2 | Minicomputer | | 1986 |
| | A-2150/211 | Minicomputer | | 1996 |
| | A-2410 | Minicomputer | | 1996 |
| | A-2800 | Minicomputer | | 1996 |
| | A-2F | Minicomputer | | 1986 |
| | A-3 | Minicomputer | | 1984 |
| | A-3D | Minicomputer | | 1984 |
| | A-3E | Minicomputer | | 1985 |
| | A-3F | Minicomputer | | 1985 |
| | A-3K | Minicomputer | | 1986 |
| | A-4 | Minicomputer | | 1987 |
| | A-4F | Minicomputer | | 1987 |
| | A-4FS | Minicomputer | | 1980s |
| | A-5 | Minicomputer | | 1980s |
| | A-5F | Minicomputer | | 1986 |
| | A-6 | Minicomputer | | 1980s |
| | A-6F | Minicomputer | | 1987 |
| | A-6FS | Minicomputer | | 1987 |
| | A-6K | Minicomputer | | 1988 |
| | A-6NS | Minicomputer | | 1980s |
| | A-9 | Minicomputer | | 1984 |
| | A-9D | Minicomputer | | 1984 |
| | A-9F | Minicomputer | | 1984 |
| | A-9NX | Minicomputer | | 1987 |
| | A6-HS | Minicomputer | | 1980s |
| | A6-KS | Minicomputer | | 1980s |
| | DCP/10A | Minicomputer | Communication processor | 1985 |
| | DCP/15 | Minicomputer | Communication processor | 1987 |
| | DCP/30 | Minicomputer | Communication processor | 1988 |
| | DCP/40 | Minicomputer | Communication processor | 1980 |
| | DCP/5 | Minicomputer | Communication processor | 1989 |
| | DCP/50 | Minicomputer | Communication processor | 1987 |
| | | | | |
 | United Technologies Corp. - Norden Division | PDP-11/34M (/DEC PDP-11) | Minicomputer | Military | 1977< |
| | | | | |
 | Unitronix Corp. | System 2000 | Minicomputer | PDP-11 comp. | 1983 |
| | System 3000 | Minicomputer | PDP-11 comp. | 1986< |
| | System 4000 | Minicomputer | PDP-11 comp. | 1984 |
| | | | | |
 | Universidade Federal do Rio de Janeiro (UFRJ) | Pegasus-32x (with UFRJ) | Minicomputer | | 1982 |
| | | | | |
 | University Computing Company (UCC) | COPE 1201-00 | Minicomputer | Communication processor | 1968 |
| | | | | |
 | University of Cambridge Mathematical Laboratory | CAP | Minicomputer | | - |
| | | | | |
 | Uchida-Yoko Co., Ltd. | NetGLOBE 9000III (by Fujitsu) | Office | | 2000s |
| | USAC 1010 | Office | | 1963 |
| | USAC 1500 | Office | | 1968 |
| | USAC 2001 | Office | | 1984 |
| | USAC 2001 Manager | Office | | 1988 |
| | USAC 2001 VH | Office | | 1986 |
| | USAC 2500 | Office | | 1968 |
| | USAC 300 | Office | | 1968 |
| | USAC 3010 | Office | | 1961 |
| | USAC 400 | Office | | 1970 |
| | USAC 5010 | Office | | 1961 |
| | USAC 720/10 | Office | | 1971 |
| | USAC 720/20 | Office | | 1971 |
| | USAC 720/30 | Office | | 1972 |
| | USAC 720/50 | Office | | 1972 |
| | USAC 720/70 | Office | | 1972 |
| | USAC 720/90 | Office | | 1973 |
| | USAC 820 | Office | | 1975 |
| | USAC 820C | Office | | 1976 |
| | USAC 820L | Office | | 1977 |
| | USAC 820S | Office | | 1975 |
| | USAC 820V | Office | | 1976 |
| | USAC 8800/20 | Office | | 1990 |
| | USAC 8800/30 | Office | | 1990 |
| | USAC 8800/40 | Office | | 1990 |
| | USAC 8800/50 | Office | | 1990 |
| | USAC 8800/60 | Office | | 1990 |
| | USAC 8800/70 | Office | | 1990 |
| | USAC GX130 | Office | | 1990 |
| | USAC GX130A | Office | | 1990 |
| | USAC GX130LT | Office | | 1990 |
| | USAC GX150 | Office | | 1990 |
| | USAC GX150A | Office | | 1990 |
| | USAC GX170 | Office | | 1990 |
| | USAC GX170A | Office | | 1990 |
| | USAC GX170LT | Office | | 1990 |
| | USAC GX190 | Office | | 1988 |
| | USAC GX190A | Office | | 1990 |
| | USAC GX90 | Office | | 1990 |
| | USAC System 11 | Office | | 1979 |
| | USAC System 21 | Office | | 1982 |
| | USAC System 3 | Office | | 1981 |
| | USAC System 5 | Office | | 1982 |
| | USAC System 7 | Office | | 1980 |
| | USAC System 9 | Office | | 1982 |
| | | | | |
 | Ultec Computer Corp. | X-100 | Office | | 1981< |
| | X-140 | Office | | 1981< |
| | | | | |
 | Ultimacc Systems, Inc. | Disc System | Office | | 1971 |
| | ULTIMACC | Office | Accounting computer | 1971 |
| | | | | |
 | Underwood Corp. | Elecom 50 | Office | Early | 1956 |
| | | | | |
 | Unidata | 300 | Office | | 1974 |
| | 3000 | Office | | 1983 |
| | | | | |
 | U R There International | @migo PD-600C | PDA (P) | | 2002 |
| | | | | |
 | U.S. Robotics, Inc. (USR) | Palm Pilot Personal | PDA (P) | | 1997 |
| | Palm Pilot Pro | PDA (P) | | 1997 |
| | Pilot 1000 | PDA (P) | | 1996 |
| | Pilot 5000 | PDA (P) | | 1996 |
| | | | | |
 | Uniden Holdings Corp. | UniPro PC100 | PDA (P) | | 1999 |
| | UniPro PC100-A | PDA (P) | | 1999 |
| | | | | |
 | Udoo | X86 | SBC | | 2013 |
| | | | | |
 | Ugoos Industrial Co., Ltd. | UTS3 | SBC | | 2000s |
| | | | | |
 | Ultrascience (div. Gibbs Laboratories) | S/R (Alpha Micro clone) | SBC | | 1980s |
| | | | | |
 | Unilab Ltd. | Three Chips Plus | SBC | | 1987 |
| | | | | |
 | University of Indiana | Indiana University 68030 board | SBC | | 1993 |
| | | | | |
 | University Research and Development Associates, Inc. (URDA) | P68000 microLAB (by Quasitronics) (3 models) | SBC | Learn | 1986 |
| | SDK-386 | SBC | Learn, Kit | 1980s |
| | SDK-51 | SBC | Learn, Kit | 1982 |
| | SDK-85 (=Intel SDK-85) | SBC | Learn, Kit | 1980s |
| | SDK-86 (=Intel SDK-86) | SBC | Learn, Kit | 1980s |
| | | | | |
 | Up Board | UP2 | SBC | | 2016 |
| | | | | |
 | UNA Computer | WindServer 3000 | Server | | 2002< |
| | WindServer 5000 | Server | | 2002< |
| | | | | |
 | Unidata s.r.l. | LAN Server | Server | | 1989 |
| | | | | |
 | Unisys Corp. | Aquanta DR/2 | Server | | 2003< |
| | Aquanta DR/6 (SDR 616681) (1p) | Server | | 1997 |
| | Aquanta DR/6 (SDR 620081) (1p) | Server | | 1997 |
| | Aquanta DR/6 (SDR 620081) (2p) | Server | | 1997 |
| | Aquanta DS/2B | Server | | 1997 |
| | Aquanta DS/6 (CWP 50073-Z) PentiumPro 200 | Server | | 1997 |
| | Aquanta DS/6 (CWP 50073-Z) PentiumPro 200 (1p) | Server | | 1997 |
| | Aquanta DS/6 (SDP 616681) | Server | | 1997 |
| | Aquanta DS/6 (SDP 616681) (1p) | Server | | 1997 |
| | Aquanta DS/6 (SDP 620081) | Server | | 1997 |
| | Aquanta DS/6 (SDP 620081) (1p) | Server | | 1997 |
| | Aquanta DS/6 (SDP 620081) (2p) | Server | | 1997 |
| | Aquanta ELS (CMT 616671) | Server | | 1997 |
| | Aquanta ELS (CMT 618071) | Server | | 1997 |
| | Aquanta ELS (CMT 62007) | Server | | 1997 |
| | Aquanta ES 2043 | Server | | 2003< |
| | Aquanta ES 2043 Xeon 500 | Server | | 1990s |
| | Aquanta ES 2043R | Server | | 2003< |
| | Aquanta ES 2045 | Server | | 2003< |
| | Aquanta ES 2045R | Server | | 2003< |
| | Aquanta ES 5043 | Server | | 2003< |
| | Aquanta ES 5043R | Server | | 2003< |
| | Aquanta ES 5045 | Server | | 2003< |
| | Aquanta ES 5045R | Server | | 2003< |
| | Aquanta GPS | Server | | 1997 |
| | Aquanta HR/6 (HR 616681) | Server | | 1997 |
| | Aquanta HS/6 (HS 620081) (6p) | Server | | 1997 |
| | Aquanta HS/6 PentiumPro 166 | Server | | 1995> |
| | Aquanta LN Series | Server | | 2007< |
| | Aquanta NAPC | Server | | 1997 |
| | Aquanta NP (NPC 50011) | Server | | 1997 |
| | Aquanta QR Pentium/133 (4P) | Server | | 1995> |
| | Aquanta QR/2 | Server | | 2003< |
| | Aquanta QR/2V | Server | | 2003< |
| | Aquanta QR/6 (SFR 616681) | Server | | 1997 |
| | Aquanta QR/6 (SFR 616681) (1p) | Server | | 1997 |
| | Aquanta QR/6 (SFR 620081) | Server | | 1997 |
| | Aquanta QR/6 (SFR 620081) (1p) | Server | | 1997 |
| | Aquanta QR/6 (SFR 620081) (4p) | Server | | 1997 |
| | Aquanta QS/2 | Server | | 2003< |
| | Aquanta QS/2V | Server | | 1990s |
| | Aquanta QS/6 (SFE 6166151) | Server | | 1997 |
| | Aquanta QS/6 (SFE 6166151) (1p) | Server | | 1997 |
| | Aquanta QS/6 (SFE 6166151) (4p) | Server | | 1997 |
| | Aquanta QS/6 (SFE 6200151) | Server | | 1997 |
| | Aquanta QS/6 (SFE 6200151) (1p) | Server | | 1997 |
| | Aquanta QS/6 (SFE 6200151) (4p) | Server | | 1997 |
| | Aquanta QS/6 (SME 6166161) PentiumPro 166 | Server | | 1997 |
| | Aquanta QS/6 (SME 6200151) PentiumPro 200 | Server | | 1997 |
| | Aquanta XR/6 Pentium Pro 200 (10p) | Server | | 1997 |
| | Aquanta XR/6 Pentium Pro 200 (12p) | Server | | 1997 |
| | Aquanta XS/6 Pentium Pro 200 (10p) | Server | | 1997 |
| | Aquanta XS/6 Pentium Pro 200 (12p) | Server | | 1997 |
| | ClearPath A2100 | Server | | 1996 |
| | Clearpath CS300L | Server | | 2005 |
| | ClearPath CS4000L | Server | | 2011 |
| | ClearPath CS450L | Server | | 2010 |
| | ClearPath FS1750 | Server | | 2010s |
| | ClearPath FS1760 | Server | | 2010s |
| | ClearPath FS1800 | Server | | 2010s |
| | ClearPath FS4100 | Server | | 2010 |
| | ClearPath FS4180 | Server | | 2010s |
| | ClearPath FS4200 | Server | | 2012 |
| | ClearPath FS4280 | Server | | 2010s |
| | ClearPath FS4290 | Server | | 2010s |
| | ClearPath LX5000 | Server | | 1998 |
| | ClearPath LX5100 | Server | | 1998 |
| | ClearPath LX5120 | Server | | 1998 |
| | ClearPath LX5200 | Server | | 1999~ |
| | ClearPath LX5230 | Server | | 1999~ |
| | Clearpath LX5400 | Server | | 1999 |
| | ClearPath LX5410-UL | Server | | 1999 |
| | ClearPath LX5420-80 | Server | | 1999 |
| | ClearPath LX5420-UL | Server | | 1999 |
| | ClearPath LX5430-128 | Server | | 1999 |
| | ClearPath LX5430-UL | Server | | 1999 |
| | ClearPath LX6100 | Server | | 2000 |
| | ClearPath NX4200 | Server | | 1997 |
| | ClearPath NX5820 | Server | | 2000 |
| | ClearPath NX6820 | Server | | 2006 |
| | ClearPath NX6830 | Server | | 2006 |
| | ClearPath Plus CS7101 | Server | | 2001 |
| | ClearPath Plus CS7201 | Server | | 2001 |
| | Clearpath Plus CS7400 | Server | | 2002 |
| | Clearpath Plus CS7800 | Server | | 2001 |
| | ClearPath Plus CS7801 | Server | | 2001 |
| | ClearPath Plus CS7802 | Server | | 2001 |
| | ClearPath SMP 5200 (4 models) | Server | | 1996 |
| | ClearPath SMP 5400 (8 models) | Server | | 1996 |
| | ClearPath SMP 61000 (5 models) | Server | | 1996 |
| | ClearPath SMP 6400 PentiumPro 166 (4p) | Server | | 1995> |
| | ClearPath SMP 6400 PentiumPro 200 (4p) | Server | | 1995> |
| | ClearPath VX1305 | Server | | 2003< |
| | ClearPath VX1401-BSE (4p) | Server | | 1990s |
| | Clearpath VX1505 | Server | | 2003< |
| | ClearPath VX1801 (12p) | Server | | 2003< |
| | ClearPath VX1805 (12p) | Server | | 2003< |
| | e-@ction ClearPath Plus Server CS7101 | Server | | 2003< |
| | e-@ction Enterprise Server ES2000 Series | Server | | 2000 |
| | e-@ction Enterprise Server ES2023 | Server | | 2003< |
| | e-@ction Enterprise Server ES2024 | Server | | 2000 |
| | e-@ction Enterprise Server ES2024R | Server | | 2003< |
| | e-@ction Enterprise Server ES2025 | Server | | 2003< |
| | e-@ction Enterprise Server ES2025R | Server | | 2003< |
| | e-@ction Enterprise Server ES2026 | Server | | 2003< |
| | e-@ction Enterprise Server ES2026L | Server | | 2003< |
| | e-@ction Enterprise Server ES2043 | Server | | 1990s |
| | e-@ction Enterprise Server ES2043R | Server | | 1999 |
| | e-@ction Enterprise Server ES2044 | Server | | 2003< |
| | e-@ction Enterprise Server ES2044R | Server | | 2003< |
| | e-@ction Enterprise Server ES2045 | Server | | 2003< |
| | e-@ction Enterprise Server ES2045R | Server | | 2003< |
| | e-@ction Enterprise Server ES2046 | Server | | 2003< |
| | e-@ction Enterprise Server ES2046L | Server | | 2003< |
| | e-@ction Enterprise Server ES2085 | Server | | 1990s |
| | e-@ction Enterprise Server ES2085R | Server | | 2003< |
| | e-@ction Enterprise Server ES5000 Model 5230R G1 | Server | | 2010 |
| | e-@ction Enterprise Server ES5000 Model 5400B G1 | Server | | 2010 |
| | e-@ction Enterprise Server ES5024 | Server | | 2003< |
| | e-@ction Enterprise Server ES5024R | Server | | 2003< |
| | e-@ction Enterprise Server ES5026 | Server | | 2003< |
| | e-@ction Enterprise Server ES5044 | Server | | 2003< |
| | e-@ction Enterprise Server ES5044R | Server | | 2003< |
| | e-@ction Enterprise Server ES5045 | Server | | 2003< |
| | e-@ction Enterprise Server ES5045R | Server | | 2003< |
| | e-@ction Enterprise Server ES5046 | Server | | 2003< |
| | e-@ction Enterprise Server ES5046L | Server | | 2003< |
| | e-@ction Enterprise Server ES5085 | Server | | 2003< |
| | e-@ction Enterprise Server ES5085R | Server | | 2003< |
| | e-@ction Enterprise Server ES7000 model 7600R | Server | | 2008 |
| | e-@ction Enterprise Server ES7000 Model 7600R G2 | Server | | 2010 |
| | e-@ction Enterprise Server ES7000 Model 7600R G3 | Server | | 2011 |
| | e-@ction Enterprise Server ES7000 Model 7600R G4 | Server | | 2000s |
| | e-@ction Enterprise Server ES7000 Orion 230 | Server | | 2000s |
| | e-@ction ES7000 Plateau 7.1 | Server | | 2003< |
| | e-@ction ES7000 Plateau 8.01IC1 | Server | | 2003< |
| | e-@ction ES7000 Plateau 8.1 | Server | | 2003< |
| | e-@ction ES7000 System Release 10.0 | Server | | 2003< |
| | e-@ction ES7000 System Release 10.1 | Server | | 2003< |
| | e-@ction ES7000 System Release 8.1 | Server | | 2003< |
| | e-@ction ES7000 System Release 8.1 w/SP2 | Server | | 2003< |
| | e-@ction ES7000 System Release 9.1 | Server | | 2003< |
| | ES2023 | Server | | 2003< |
| | ES2024 | Server | | 2003< |
| | ES2024R | Server | | 2003< |
| | ES2025 | Server | | 2003< |
| | ES2025R | Server | | 2003< |
| | ES3000 Model 3520R G3 | Server | | - |
| | ES3000 Model 3520R G4 | Server | | - |
| | ES3000 Model 3520R G5 | Server | | 2015 |
| | ES3000 Model 3530R G3 | Server | | 2012 |
| | ES3000 Model 3530R G4 | Server | | 2013 |
| | ES3000 Model 3530R G5 | Server | | 2016 |
| | ES3000 Model 3530T G3 | Server | | 2012 |
| | ES3000 Model 3530T G4 | Server | | 2013 |
| | ES3000 Model 3530T G5 | Server | | 2016 |
| | ES3000 Model 3560R G1 | Server | | 2010 |
| | ES3000 Model 3560R G2 | Server | | 2012 |
| | ES3000 Model 3560R G3 HCS | Server | | 2012 |
| | ES3000 Model 3560R G4 HCS | Server | | 2013 |
| | ES3000 Model 3560R G5 | Server | | 2016 |
| | ES3000 Model 3560R G5 HCS | Server | | 2016 |
| | ES3000 Model 3560T G1 | Server | | 2010 |
| | ES3000 Model 3560T G2 | Server | | 2012 |
| | ES3000 Model 3580R G3 | Server | | 2012 |
| | ES3000 Model 3580R G4 | Server | | 2013 |
| | ES3000 Model 3590R G1 | Server | | 2010 |
| | ES3000 Model 3590R G2 | Server | | 2012 |
| | ES3000 Model 3590R G3 | Server | | 2012 |
| | ES3000 Model 3590R G4 | Server | | 2013 |
| | ES3000 Model 3590R G5 | Server | | 2016 |
| | ES5024 | Server | | 2003< |
| | ES5024R | Server | | 2003< |
| | ES5044 | Server | | 2003< |
| | ES5044R | Server | | 2003< |
| | ES5085 | Server | | 2003< |
| | ES5085R | Server | | 2003< |
| | ES7000/100 | Server | | 1999 |
| | ES7000/130 | Server | | 2000s |
| | ES7000/200 | Server | | 2000s |
| | ES7000/230 | Server | | 2000s |
| | ES7000/500 | Server | | 2000s |
| | ES7000/550 | Server | | 2000s |
| | ES7000/600 | Server | | 2000s |
| | ES7000/One | Server | | 2006 |
| | ESL2044 | Server | | 2003< |
| | ESL5044 | Server | | 2003< |
| | Pathway Series SFE 516691 (4p) | Server | | 2003< |
| | Pathway Series SFR 513391 (4p) | Server | | 2003< |
| | Pathway Series SME 59010 | Server | | 1994 |
| | Pathway Series SMP 5400 (4p) | Server | | 2003< |
| | PW2 Advantage SFR | Server | | 1996< |
| | QR/2 | Server | | 2003< |
| | SVE 56681 | Server | | 1994< |
| | SVE 5669 | Server | | 1994 |
| | SVE 56691-FDD | Server | | 1994< |
| | SVE 590101 | Server | | 1994< |
| | SVE 59091 | Server | | 1995< |
| | SVI 5907 | Server | | 1994 |
| | SVI 59071 | Server | | 1995< |
| | SVI 59071/90 Pentium | Server | | 1995< |
| | U5000/51 | Server | | 1988 |
| | U5000/55 | Server | | 1988 |
| | U5000/85 | Server | | 1988 |
| | U5000/95 | Server | | 1988 |
| | U6000/10 | Server | | 1990 |
| | U6000/100 | Server | | 1993 |
| | U6000/15 | Server | | 1992 |
| | U6000/30 | Server | | 1989 |
| | U6000/300 | Server | | 1993 |
| | U6000/31 | Server | | 1980s |
| | U6000/35 | Server | | 1991 |
| | U6000/50 | Server | | 1984 |
| | U6000/500 Model 20 | Server | | 1994 |
| | U6000/500 Model 50 | Server | | 1994 |
| | U6000/500 Model 80 | Server | | 1994 |
| | U6000/51 | Server | | 1991< |
| | U6000/520 | Server | | 1990s |
| | U6000/55 | Server | | 1991< |
| | U6000/60 | Server | | 1990 |
| | U6000/600 Model 20 | Server | | 1994 |
| | U6000/600 Model 60 | Server | | 1994 |
| | U6000/65 | Server | | 1991< |
| | U6000/65-1 | Server | | 1992 |
| | U6000/65-5 | Server | | 1992 |
| | U6000/65-N1 | Server | | 1992 |
| | U6000/65-N5 | Server | | 1992 |
| | U6000/70 | Server | | 1989 |
| | U6000/72 | Server | | 1990~ |
| | U6000/75 | Server | | 1991< |
| | U6000/75-1 | Server | | 1992 |
| | U6000/75-6 | Server | | 1992 |
| | U6000/80 | Server | | 1989 |
| | U6000/85 | Server | | 1991 |
| | U6000/WS | Server | | 1990 |
| | U7000/40 | Server | | 1985 |
| | U7000/50 | Server | | 1987 |
| | U7000/51 | Server | | 1987 |
| | U7000/52 | Server | | 1987 |
| | USfamily Model 100 | Server | | - |
| | USfamily Model 1000 | Server | | - |
| | USfamily Model 10000U - XXXXA (6 models) | Server | | - |
| | USfamily Model 10000U - XXXXB (14 models) | Server | | - |
| | USfamily Model 10000U - XXXXC (13 models) | Server | | - |
| | USfamily Model 1000E | Server | | - |
| | USfamily Model 104 (3 models) | Server | | - |
| | USfamily Model 105 (4 models) | Server | | - |
| | USfamily Model 110 (10 models) | Server | | - |
| | USfamily Model 120 (14 models) | Server | | - |
| | USfamily Model 1200 - 1XX (13 models) | Server | | - |
| | USfamily Model 2000 (20 models) | Server | | - |
| | USfamily Model 20000U - XXXXS (24 models) | Server | | - |
| | USfamily Model 2000E (11 models) | Server | | - |
| | USfamily Model 20E | Server | | - |
| | USfamily Model 30 | Server | | - |
| | USfamily Model 330 | Server | | - |
| | USfamily Model 330E | Server | | - |
| | USfamily Model 360 | Server | | - |
| | USfamily Model 370 | Server | | - |
| | USfamily Model 40 | Server | | - |
| | USfamily Model 40E | Server | | - |
| | USfamily Model 470 | Server | | - |
| | USfamily Model 470E | Server | | - |
| | USfamily Model 490 | Server | | - |
| | USfamily Model 490E | Server | | - |
| | USfamily Model 490E/690 | Server | | - |
| | USfamily Model 60 (JPU060X) | Server | | - |
| | USfamily Model 60 (JPU065X) | Server | | - |
| | USfamily Model 670 | Server | | - |
| | USfamily Model 690 | Server | | - |
| | USfamily Model 70 | Server | | - |
| | USfamily Model 70E | Server | | - |
| | VX1104-1IS | Server | | 2003< |
| | VX1104-2IS | Server | | 2003< |
| | VX1501 | Server | | 2003< |
| | VX1505 | Server | | 2003< |
| | VX1901 | Server | | 2003< |
| | VX1905 | Server | | 2003< |
| | | | | |
 | United Micro | AMD MP2002 Server | Server | | 2002 |
| | | | | |
 | Univation, Inc. | LifeServer 386 | Server | | 1987 |
| | LifeServer 386/T | Server | | 1988 |
| | | | | |
 | UV Networks, Inc. | WebBox 1000 | Server | | 2002 |
| | | | | |
 | U.S. Air Force - Patrick Air Force Base | FLAC | Special | Early | 1953 |
| | | | | |
 | United Technologies Corp. - Norden Division | AN/GYK29 (lic. Marconi MC 1800) | Special | Airborne | 1982~ |
| | AN/UYK41 (/PDP-11) | Special | Airborne | 1978~ |
| | AN/UYK42 | Special | Airborne | 1980s |
| | MIL VAX 1 | Special | Airborne | 1983 |
| | Norden Vote Tally | Special | | 1962 |
| | Rugged VAX | Special | Airborne | 1983 |
| | SCRIBE | Special | Early | 1960 |
| | | | | |
 | Universidad Nacional Autónoma de México (UNAM) | AHR | Special | Parallel computer | 1982 |
| | | | | |
 | Universidade de São Paulo (USP) | MS8701 | Special | Parallel computer | 1990s |
| | MS8702A | Special | Parallel computer | 1990s |
| | | | | |
 | Università di Pavia | PAPIA | Special | Parallel computer | 1988 |
| | | | | |
 | Universita di Pisa - Centro Studi Calcolatrici Elettroniche (CSCE) | CEP | Special | Early | 1957 |
| | | | | |
 | Universität des Saarlandes | SB-PRAM | Special | Parallel computer | 1990s |
| | | | | |
 | Universität Heidelberg | NERV | Special | Parallel computer | 1989 |
| | | | | |
 | Université de Bretagne Occidentale (UBO) | ArMen | Special | Parallel computer | 1993 |
| | | | | |
 | Université de Nice - Laboratoire d'Informatique Signaux et Sytèmes (i3S)
| OPSILA | Special | Parallel computer | 1980s |
| | | | | |
 | Université de Provence | OUPPI-1 | Special | Parallel computer | 1988 |
| | | | | |
 | University College London (UCL) | CLIP-4 | Special | | 1981 |
| | | | | |
 | University of Melbourne | CSIR Mk1 | Special | Early | 1949 |
| | CSIRAC | Special | Early | 1956 |
| | MDMA | Special | Parallel computer | 1992 |
| | | | | |
 | University of California (UC Berkeley) | CALDIC | Special | Early | 1953 |
| | MANIAC I (by Los Alamos) | Special | Early, IAS machine
| 1952 |
| | MIDAS | Special | Parallel computer | 1983 |
| | RISC I | Special | | 1981 |
| | RISC II | Special | | 1981> |
| | SOAR | Special | | 1984 |
| | SPUR | Special | | 1985 |
| | | | | |
 | University of Chicago | MANIAC III | Special | Early | 1960 |
| | | | | |
 | University of Harbin - Institute of Military Engineering | 441B (dev) | Special | | 1965 |
| | 901 | Special | Early | 1958 |
| | | | | |
 | University of Illinois | AMP-1 | Special | | 1980~ |
| | Cedar | Special | Parallel computer | 1985 |
| | ILLIAC | Special | Early, IAS machine
| 1952 |
| | ILLIAC II | Special | | 1962 |
| | ILLIAC III | Special | | 1966 |
| | ORDVAC | Special | Early, IAS machine
| 1951 |
| | PLATO I | Special | Early | 1960 |
| | PLATO II | Special | | 1961 |
| | PLATO III | Special | | 1967 |
| | | | | |
 | University of Kobe | Kobe University Machine | Special | | 1983 |
| | PEK | Special | | 1984 |
| | TAKITAC-7 | Special | | 1979 |
| | | | | |
 | University of Kyushu | KT-1 | Special | Early | 1958 |
| | RPP | Special | Parallel computer | 1990s |
| | | | | |
 | University of London - Birkbeck College | APE(R)C | Special | Early | 1952 |
| | ARC | Special | Early | 1948 |
| | M2 | Special | Early | 1956 |
| | MAC | Special | | - |
| | SEC | Special | Early | 1951~ |
| | | | | |
 | University of Manitoba | Multi | Special | Dataflow machine | 1980s |
| | | | | |
 | University of Maryland | Pascal Machine | Special | | 1981 |
| | | | | |
 | University of New South Wales | UTECOM | Special | Early | 1956 |
| | | | | |
 | University of Oklahoma | OSAGE (/Rice R1) | Special | Early | 1963 |
| | | | | |
 | University of Saskatchewan | M3 | Special | | 1964 |
| | | | | |
 | University of Sidney | SILLIAC | Special | Early, IAS machine
| 1956 |
| | | | | |
 | University of Tokyo | GRACE | Special | | 1980s |
| | GRAPE-1 | Special | | 1990 |
| | GRAPE-2 | Special | | 1990 |
| | GRAPE-3 | Special | | 1990 |
| | GRAPE-4 | Special | Parallel computer | - |
| | GRAPE-6 | Special | | 2000s |
| | MD-GRAPE | Special | | 1995 |
| | MD-GRAPE-II | Special | | 2000s |
| | PC-1 | Special | Early | 1958 |
| | PC-2 (aka FACOM 202) (by Fujitsu) | Special | Early | 1960 |
| | PIE | Special | | 1993 |
| | | | | |
 | University of Toronto | HECTOR | Special | Parallel computer | 1990s |
| | NUMAchine | Special | Parallel computer | 1990s |
| | | | | |
 | University of Utah | DDM1 (with Burroughs) | Special | Dataflow machine | 1976 |
| | | | | |
 | University of Wisconsin | WISC | Special | Early | 1954 |
| | | | | |
 | Unisys Corp. | OPUS | Supercomputer | | 1995 |
| | | | | |
 | Universidad Nacional Autónoma de México (UNAM) | Kan Balam | Supercomputer | | 2007 |
| | | | | |
 | Universität Regensburg | iDataCool (with IBM) | Supercomputer | | 2011 |
| | | | | |
 | University of Illinois | ILLIAC IV | Supercomputer | Parallel computer | 1970 |
| | | | | |
 | University of Nebraska Omaha (UNO) | Firefly | Supercomputer | | 2007 |
| | | | | |
 | University of Tsukuba | CP-PACS/2048 (with Hitachi) | Supercomputer | | 1996 |
| | PACS-128 | Supercomputer | | 1983 |
| | PACS-32 | Supercomputer | | 1980 |
| | PACS-32J | Supercomputer | | 1984 |
| | PACS-64J | Supercomputer | | 1984 |
| | QCDPAX | Supercomputer | | 1989 |
| | | | | |
![LIT]() | UAB "ACME Europe" | Tablet TB01 | Tablet (P) | | 2011 |
| | TB03 High Vision | Tablet (P) | | 2012 |
| | TB04 Speedy-Pad | Tablet (P) | | 2012 |
| | TB1010 | Tablet (P) | | 2014 |
| | TB1012 | Tablet (P) | | 2014 |
| | TB1016-3G | Tablet (P) | | 2016 |
| | TB708 | Tablet (P) | | 2013 |
| | TB709-3G | Tablet (P) | | 2014 |
| | TB713-3G | Tablet (P) | | 2014 |
| | TB714 Basic | Tablet (P) | | 2014 |
| | TB715 Kids | Tablet (P) | | 2014 |
| | TB717-3G | Tablet (P) | | 2015 |
| | | | | |
 | Ulefone Technology Co., Ltd. | Firefly A12 | Tablet (P) | | 2012 |
| | Firefly B1009 | Tablet (P) | | 2012 |
| | Firefly B7107 | Tablet (P) | | 2013 |
| | Firefly B7220 | Tablet (P) | | 2013 |
| | Firefly B7221 | Tablet (P) | | 2013 |
| | Firefly B7850 | Tablet (P) | | 2012 |
| | Firefly B7851 | Tablet (P) | | 2012 |
| | Firefly B9716 | Tablet (P) | | 2012 |
| | Firefly M1003 | Tablet (P) | | 2012 |
| | Firefly M7009 | Tablet (P) | | 2012 |
| | Firefly M786 | Tablet (P) | | 2012 |
| | Firefly Z3735 | Tablet (P) | | 2012 |
| | | | | |
 | Uni Device | ER-UDM04D | Tablet (P) | | 2013 |
| | JO-UQM10A | Tablet (P) | | 2013 |
| | KM-UQM11A | Tablet (P) | | 2013 |
| | LM-UDP09A | Tablet (P) | | 2013 |
| | MM-UDP03B | Tablet (P) | | 2013 |
| | NO-UQP10A | Tablet (P) | | 2013 |
| | PM-UQM12A | Tablet (P) | | 2015 |
| | PM-UQM13A | Tablet (P) | | 2013 |
| | RP-UDM01B | Tablet (P) | | 2013 |
| | RP-UDP04A | Tablet (P) | | 2015 |
| | RP-UDP05A | Tablet (P) | | 2013 |
| | | | | |
 | Uni Teknoloji (uniPad) | V973 | Tablet (P) | | 2010s |
| | | | | |
 | Unowhy (QooQ) | V3 | Tablet (P) | | 2014 |
| | | | | |
 | Uj Kalász MGTSZ | RAAB 80/T | Terminal | | 1985 |
| | | | | |
 | Ulbrich Automation GmbH | Microterminal II | Terminal | | 1977 |
| | Microterminal II /Z80 | Terminal | | 1978 |
| | | | | |
 | Ultra Tec | Intele-Type | Terminal | | 1980s |
| | | | | |
 | Ultranet Ltd. | ? | Terminal | | 1980s |
| | | | | |
 | Ultratec, Inc. | Minicom 6000 | Terminal | | 2000 |
| | Minicom IV | Terminal | | 1997 |
| | Superprint 4425 | Terminal | | 1997~ |
| | Superprint 4425A | Terminal | | 2001< |
| | Uniphone 1140 | Terminal | | 2001~ |
| | | | | |
 | Ultronic Systems Corp. | Videomaster 7000 | Terminal | | 1970< |
| | Videomaster 7100 | Terminal | | 1972 |
| | | | | |
 | Unicom, Inc. | CT-3000 | Terminal | | 1970< |
| | | | | |
 | Unidata s.r.l. | Unistation | Terminal | | 1990< |
| | Unistation 30 | Terminal | | 1990< |
| | Unistation 60 | Terminal | | 1990< |
| | | | | |
 | Unisys Corp. | ET 1100 | Terminal | | 1983 |
| | PT 1500 | Terminal | | 1984 |
| | SVT-1120 | Terminal | | 1986 |
| | SVT-1121 | Terminal | | 1986 |
| | SVT-1123 | Terminal | | 1987 |
| | SVT-1124 | Terminal | | 1987 |
| | SVT-1125 | Terminal | | 1987 |
| | SVT-1126 | Terminal | | 1987 |
| | SVT-1210 | Terminal | | 1986 |
| | SVT-1220 | Terminal | | 1985 |
| | SVT-1224 | Terminal | | 1986 |
| | T27 | Terminal | | 1986 |
| | T3560-23 | Terminal | | 1980s |
| | T3622-99 | Terminal | | 1980s |
| | TO-300 | Terminal | | 1994 |
| | UVT 1224 | Terminal | | 1987 |
| | UVT 12246 | Terminal | | 1990< |
| | Visual 603 | Terminal | | 1987< |
| | Visual 630 | Terminal | | 1987< |
| | | | | |
 | Unitech, Inc. | UT-1 | Terminal | | 1971 |
| | UT-2 | Terminal | | 1976 |
| | | | | |
 | United Barcode Industries, Inc. (UBI) | ? | Terminal | | 1990s |
| | | | | |
 | UNITEL | Minitel | Terminal | VTX (Minitel) | 1980s |
| | | | | |
 | Universal Computer Systems, Inc. (UCS) | UCS 450 | Terminal | | 1990s |
| | | | | |
 | Universal Data Systems (UDS) | UDS-212LP | Terminal | | 1982 |
| | | | | |
 | Universal Data, Inc. | UDI-100 | Terminal (P) | | 1981 |
| | UDI-125 | Terminal (P) | | 1980s |
| | UDI-125WL | Terminal (P) | | 1988 |
| | UDI-125XL | Terminal (P) | | 1986 |
| | UDI-200 | Terminal (P) | | 1980s |
| | UDI-200RF | Terminal (P) | | 1990 |
| | UDI-210 | Terminal (P) | | 1990 |
| | UDI-250 | Terminal (P) | | 1990 |
| | UDI-250DOS | Terminal (P) | | 1992 |
| | UDI-300 | Terminal (P) | | 1994 |
| | UDI-350 | Terminal (P) | | 1994 |
| | UDI-50 | Terminal (P) | | 1987 |
| | UDI-500 | Terminal (P) | | 1983 |
| | UDI-75 | Terminal (P) | | 1986 |
| | UDI-75II | Terminal (P) | | - |
| | | | | |
 | Universal Technology, Inc. (UTEC) | Data-Kinetic | Terminal | | 1979 |
| | | | | |
 | University Computing Company (UCC) | COPE.30 | Terminal | | 1970 |
| | COPE.32 | Terminal | | 1970 |
| | COPE.34 | Terminal | | 1970 |
| | COPE.36 | Terminal | | 1970 |
| | COPE.38 | Terminal | | 1970 |
| | COPE.41 | Terminal | | 1970 |
| | COPE.45 | Terminal | | 1970 |
| | | | | |
 | US Data Corp. | React | Terminal | | 1976 |
| | | | | |
 | Unisys Corp. | B38 (by Convergent Tech.) | Workstation | | 1987 |
| | ICON | Workstation | | 1983 |
| | Pathway Series SSE 5133101 (2p) | Workstation | | 2003< |
| | S2000 TWS | Workstation | | 1990 |
| | SuperGen Series 1000 | Workstation | | 1993 |
| | SuperGen Series 2000 | Workstation | | 1991 |
| | SuperGen Series 3000 | Workstation | | 1993 |
| | SuperGen Series 3500 | Workstation | | 1994< |
| | SuperGen Series 4000 | Workstation | | 1994< |
| | SuperGen Series 4100 | Workstation | | 1994< |
| | SuperGen Series 5000 | Workstation | | 1991 |
| | SuperGen Series 6000 | Workstation | | 1994< |
| | SuperGen Series 6100 | Workstation | | 1994< |
| | SuperGen Series 7000 | Workstation | | 1994< |
| | SuperGen Series 7100 | Workstation | | 1994< |
| | SVD 510071 (2p) | Workstation | | 2003< |