Aquarius Systems/BCOM MB-4DCG
Logs
chipChipset
cpuSockets
Socket 3 (PGA237) PQFP196
speedFSB speeds
25MHz33MHz40MHz50MHz
moboForm factor
LPX (max 229 x 330 mm)
dimDimensions
330x218mm
ramMax VRAM size
2MB
chipCache
64KB128KB256KB512KB
ramMax RAM size
64MB
ramRAM types
30-pin SIMM72-pin FPM
pwrPSU connector
AT (6-pin P8 + 6-pin P9)
tag Also known as
connI/O ports
1x 
Floppy interface
1x 
Gameport
2x 
IDE interface
1x 
PS/2 keyboard
1x 
PS/2 mouse
1x 
Parallel
2x 
Serial
1x 
VGA
cardExpansion slots
5x 
16-bit ISA
2x 
32-bit VLB
wrench Known issues
  • Expansion slots are on proprietary riser

The listed slots are on the riser card that came with the motherboard.
If you have this board make sure you have the riser for it.

Last updated 2025-06-28T13:44:11Z
Board info score is 8.4/10
chip Chips
-> Chipset part
UMC UM82C491 UMC UM82C493 UMC UM82C495F
-> Human Interface
(multiple brand) 8042 (Keyboard Controller)
-> IDE ctrl.
UMC UM82C871F
-> Signal transmitter/receiver
UMC UM82C865F (I/O coupler)
-> Super I/O
UMC UM82C863F
-> Video
Cirrus Logic CL-GD5428
cpufam CPU family support
bios 1 BIOS file available

vendor AMI - 1 entry

POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
40-0103-001112-00111111-080893-UMC491F-P
Note
Core version
080893
BIOS version
Logs
drv 5 drivers available
Name
Version
OS support
Arch
Size
Filename
Name
Version
1.43
OS support
MS-DOS Windows 3.1x
Arch
x86
Size
741.9KB
Filename
Name
Version
3.50
OS support
Windows NT 3.1 Windows NT 3.5x
Arch
x86
Size
140KB
Filename
Name
Version
1993.06.10
OS support
MS-DOS
Arch
x86
Size
9.5KB
Filename
Version
OS support
Arch
Size
Filename
Version
OS support
Windows 3.1x
Arch
x86
Size
1.4MB
Filename
Version
OS support
Windows 3.1x
Arch
x86
Size
600.3KB
Filename
doc No board documents available
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
1995-11-30
File
Logs
Chip
Release date
1995-11-22
File
Logs
Chip
Release date
1994-07
File
Logs
Chip
Release date
1996-01
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Family
Release date
File
Logs
Family
Release date
1996-03
File
Logs
Family
Release date
1995-07
File
Logs
Family
Release date
1995-10
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 6 (Electromyne)
image2 Image 2 of 6 (Electromyne)
image3 Image 3 of 6 (Electromyne)
image4 Image 4 of 6 (Electromyne)
image5 Image 5 of 6 (Electromyne)
image6 Image 6 of 6 (Electromyne)

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