MiTAC/Trigon MB-486SQR/RU
Chipset
Socket 
FSB speeds 25MHz33MHz40MHz50MHz
Form factorBaby AT (max 220 x 330 mm)
DimensionsEmpty
Cache
128KB256KB512KB1MB
Max RAM size
64MB
RAM types 30-pin SIMM72-pin FPM72-pin EDO
PSU connector
Multi CPU supportno
I/O ports1x
AT Keyboard
Expansion slots6x
16-bit ISA
3x
32-bit VLB
1x
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 2025-10-26T20:54:42Z
Board info score is 8.8/10
Chips
-> Chipset part
CPU family support
2 BIOS files available
Award - 4 entries
POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
01/13/95-SIS-85C471B/E/G-2C4I9T60-77
Note
Core version
4.50G
BIOS version
Logs
POST string
09/13/94-SIS-85C471B/E/G-2C4I9T60-AA
Note
Core version
4.50G
BIOS version
Logs
POST string
09/13/94-SIS-85C471B/E/G-2C4I9T60-10
Note
Core version
4.50G
BIOS version
Logs
No drivers available
1 board document available
Release date
File
Logs
Chip
Release date
File
Logs
Family
Release date
File
Logs
Family
Release date
1996-03
File
Logs
Image 1 of 2 (evasive)
Image 2 of 2 (Milen Gaigadzhov)
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