U-Board TK-82C491
chipChipset
cpuCPU socket
Socket 3 (PGA237)
speedFSB speeds
25MHz33MHz50MHz
moboForm factor
Baby AT (max 220 x 330 mm)
dimDimensions
Unknown
chipCache
0B32KB64KB128KB256KB
ramMax RAM size
Unknown
ramRAM type
30-pin SIMM
pwrPSU connector
AT (P8-P9)
connI/O ports
1x 
AT Keyboard
cardExpansion slots
6x 
16-bit ISA
3x 
32-bit VLB
1x 
8-bit ISA

Also known as:

  • TK TK 82C491/493 4N D15B
  • MG (486 UMC491/493)
  • Amaquest/Anson/Ansoon Technology Co. (unknown)

Known issues:

  • Leaky Ni-Cd clock battery

The Ni-Cd battery may be leaking, risking damage to PCB layers & nearby components. Promptly remove the battery & clean corrosion/alkaline salts from the board. Use white vinegar to dissolve salts, but exercise caution as vinegar can corrode exposed metals. A thorough examination & repair may be needed. Replace battery with guide: https://github.com/wiretap-retro/Not-A-Varta

Last updated 2023-05-28T22:13:14Z
Score is 7.6/10
chipsetChipset
chipChipset parts
UMC UM82C491 UMC UM82C493
cpuCPU family support
7 files available

Vendor: Award [5 entries]

POST string
Note
Core Ver.
BIOS Ver.
Last edit
POST string
06/24/94-UMC-491-2C4X2U02-00
Note
Core version
4.50G
BIOS version
U-BOARD GREEN PC
Last edit
pwr 2020-12-14
POST string
01/14/94-UMC-491-2C4X2U01-00
Note
Core version
4.50G
BIOS version
Last edit
pwr 2021-12-30
POST string
11/09/93-UMC-491-2C4X2U01-00
Note
Core version
4.50G
BIOS version
Last edit
pwr 2023-01-12
POST string
06/24/94-UMC-491-2C4X2U02-02
Note
Core version
4.50G
BIOS version
Last edit
pwr 2023-05-28
POST string
11/02/93-UMC-491-2C4X2U00-00
Note
Core version
4.50G
BIOS version
Last edit
pwr 2022-05-21

Vendor: AMI [3 entries]

POST string
Note
Core Ver.
BIOS Ver.
Last edit
POST string
40-0100-001762-00101111-080893-UMC491F
Note
Core version
080893
BIOS version
Last edit
pwr 2023-03-12
POST string
40-0102-428062-00101111-080893-UMC491F
Note
Core version
080893
BIOS version
Last edit
pwr 2022-05-21
POST string
40-0104-428021-00101111-080893-UMC491F
Note
Core version
080893
BIOS version
Last edit
pwr 2023-02-23
drv No drivers available
doc No board documents available
chipdoc 2 chip documents available
Chip
Language
Release date
File
Last edit
Chip
Language
English
Release date
File
Last edit
pwr 2023-10-14
Chip
Language
English
Release date
File
Last edit
pwr 2023-10-14

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