Aquarius Systems/BCOM MB-4D33/50K
Logs
chipChipset
cpuSockets
PGA132 PGA68 Socket 1 (PGA169)
speedFSB speeds
20MHz25MHz33MHz40MHz50MHz
moboForm factor
Baby AT (max 220 x 330 mm)
dimDimensions
254mm x 218mm
chipCache
64KB128KB256KB
ramMax RAM size
32MB
ramRAM type
30-pin SIMM
pwrPSU connector
AT (6-pin P8 + 6-pin P9)
tag Also known as
connI/O ports
1x 
AT Keyboard
cardExpansion slots
6x 
16-bit ISA
1x 
32-bit VLB
wrench 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

notes Notes

variants with and without 486/387 combo socket

Last updated 2025-09-05T06:13:18Z
Board info score is 6.7/10
bios 0 BIOS files available
drv No drivers available
doc No board documents available
Chip
Release date
File
Logs
Chip
Release date
File
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Chip
Release date
1995-11-30
File
Logs
Chip
Release date
1990
File
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Chip
Release date
1996-08-09
File
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Chip
Release date
1996-05-15
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Chip
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File
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Chip
Release date
File
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Chip
Release date
1995-11-22
File
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Chip
Release date
1994-07
File
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Chip
Release date
1996-01
File
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Family
Release date
File
Logs
Family
Release date
1995-12
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
image1 Image 1 of 2 (reinmacher)
image2 Image 2 of 2 (reinmacher)

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