Chicony CH-491K
chipChipset
cpuCPU socket
Socket 3 (PGA237)
speedFSB speeds
20MHz25MHz33MHz40MHz50MHz
moboForm factor
Baby AT (max 220 x 330 mm)
dimDimensions
Empty
chipCache
32KB64KB128KB256KB
ramMax RAM size
64MB
ramRAM type
72-pin FPM
pwrPSU connector
AT (P8-P9)
connI/O ports
1x 
AT Keyboard
cardExpansion slots
8x 
16-bit ISA
3x 
32-bit VLB

Also known as:

  • Chicony CK-491K

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 2024-01-06T16:45:27Z
Board info score is 8.1/10
chipsetChipset
chipChipset parts
UMC UM82C491 UMC UM82C493
cpuCPU family support
1 file available

Vendor: AMI [1 entry]

POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
40-0002-001116-00101111-080893-UMC491
Note
Core version
080893
BIOS version
Logs
drv No drivers available
doc 1 board document available
Release date
File
Logs
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs

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