Gemlight GMB-486UNL V1.1
Chipset
Socket 
FSB speeds 25MHz33MHz50MHz
Form factorBaby AT (max 220 x 330 mm)
Dimensions260mm x 220mm
Cache
32KB64KB128KB256KB
Max RAM size
128MB
RAM type 30-pin SIMM
PSU connector
Also known as
- PCChips/Hsin Tech (unknown U4800-VLX) TARGET MICRO TYPHOON 486 VESA AIM MOTHERBOARD COMPANY 486 VESA* DTK (unknown U4800-VLX)
I/O ports1x
AT Keyboard
Expansion slots6x
16-bit ISA
3x
32-bit VLB
2x
8-bit ISA
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 2026-07-21T16:34:46Z
Board info score is 9.6/10
Chips
-> Chipset part
-> Human Interface
CPU family support
1 BIOS file available
AMI - 1 entry
POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
40-0603-428036-00101111-060692-UNI4800
Note
Core version
060692
BIOS version
Logs
No drivers available
6 board documents available
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
1995-11-30
File
Logs
Chip
Release date
1990
File
Logs
Chip
Release date
1996-08-09
File
Logs
Chip
Release date
1996-05-15
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
1995-11-22
File
Logs
Chip
Release date
1994-07
File
Logs
Chip
Release date
1996-01
File
Logs
Family
Release date
File
Logs
Image 1 of 5 (Microhouse)
Image 2 of 5 (Microhouse)
Image 3 of 5 (Motherboard Continuum)
Image 4 of 5 (Motherboard Continuum)
Image 5 of 5 (Motherboard Continuum)
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