Gemlight GMB-486UNP V2 & V3
Chipset
Sockets 
FSB speeds 16MHz20MHz25MHz33MHz40MHz50MHz
Form factorBaby AT (max 220 x 330 mm)
Dimensions254mm x 218mm
Cache
32KB64KB128KB256KB
Max RAM size
128MB
RAM type 30-pin SIMM
PSU connector
I/O ports1x
AT Keyboard
Expansion slots7x
16-bit ISA
3x
32-bit VLB
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
- Bad/shorted tantalum capacitors
Owners of this board have reported tantalum capacitor failures on this board. Make sure there's no short before turning on this board for the first time.
Last updated 2025-04-23T22:44:54Z
Board info score is 8.9/10
Chips
CPU family support
3 BIOS files available
AMI - 1 entry
POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
40-0405-428036-00101111-080893-U4800VLX
Note
Core version
080893
BIOS version
Logs
Award - 2 entries
No drivers available
2 board documents available
Release date
File
Logs
Family
Release date
File
Logs
Image 1 of 5 (Microhouse)
Image 2 of 5 (deksor)
Image 3 of 5
Image 4 of 5
Image 5 of 5
Disclaimer
The info found in this page might not be entirely correct. Check out this guide to learn how you can improve it.