Gemlight GMB-486UNP V2 & V3
chipChipset
cpuCPU sockets
speedFSB speeds
16MHz20MHz25MHz33MHz40MHz50MHz
moboForm factor
Baby AT (max 220 x 330 mm)
dimDimensions
254mm x 218mm
chipCache
32KB64KB128KB256KB
ramMax RAM size
128MB
ramRAM type
30-pin SIMM
pwrPSU connector
connI/O ports
1x 
AT Keyboard
cardExpansion slots
7x 
16-bit ISA
3x 
32-bit VLB

Also known as:

  • Vextrec GMB-486UNP
  • DTK (unknown U4800-VLX)

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 2024-01-18T20:52:50Z
Score is 9.1/10
cpuCPU family support
3 files available

Vendor: AMI [1 entry]

POST string
Note
Core Ver.
BIOS Ver.
Last edit
POST string
40-0405-428036-00101111-080893-U4800VLX
Note
Core version
080893
BIOS version
Last edit
pwr 2020-06-19

Vendor: Award [2 entries]

POST string
Note
Core Ver.
BIOS Ver.
Last edit
POST string
04/22/94-UNICHIP-U4800VL-2C460G31-00
Note
Core version
4.50G
BIOS version
Last edit
pwr 2020-06-20
POST string
09/23/94-UNICHIP-U4800VL-2C460G31-00
Note
Core version
4.50G
BIOS version
Last edit
pwr 2020-06-19
drv No drivers available
doc 2 board documents available
Language
Release date
File
Last edit
Language
English
Release date
File
Last edit
pwr 2020-06-19
Language
English
Release date
File
Last edit
pwr 1970-01-01

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