Sowah Research SR-M401-A
chipChipset
cpuSocket
Socket 3 (PGA237)
speedFSB speeds
20MHz25MHz33MHz40MHz50MHz
moboForm factor
Baby AT (max 220 x 330 mm)
dimDimensions
Empty
chipCache
128KB256KB512KB
ramMax RAM size
256MB
ramRAM types
72-pin FPM72-pin EDO
pwrPSU connector
AT (P8-P9)
connI/O ports
1x 
AT Keyboard
1x 
Floppy interface
2x 
IDE interface
1x 
Parallel
2x 
Serial
cardExpansion slots
4x 
16-bit ISA
3x 
32-bit PCI

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 2023-10-14T17:55:23Z
Board info score is 8.3/10
chipChipset parts
UMC UM8881F UMC UM8886BF
chipSuper I/O chips
UMC UM8663
chipSignal transmitter/receiver chips
UMC UM8667 (RS-232 Driver/Receiver)
cpuCPU family support
2 files available

Vendor: AMI [2 entries]

POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
41-I203-008075-00101111-101094-UMC880
Note
Core version
101094
BIOS version
Logs
POST string
41-0201-428075-00101111-101094-UMC880
Note
Core version
101094
BIOS version
Logs
drv 1 known good driver available
Name
Version
OS support
Size
Filename
Name
Version
3.3
OS support
OS/2 Warp 3.x Windows 3.1x
Size
Empty
Filename
Name
Version
OS support
Size
Filename
Name
Version
3.2
OS support
MS-DOS OS/2 2.x
Size
275.2KB
Filename
doc No board documents available
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Family
Release date
File
Logs
Family
Release date
1989-04
File
Logs
Family
Release date
1990
File
Logs
Family
Release date
1992-10
File
Logs
Family
Release date
1992-02
File
Logs

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