Macrotek PCI-A55D
chipChipset
cpuCPU socket
Socket 7 (PGA321)
speedFSB speeds
50MHz60MHz66MHz
moboForm factor
Single Board Computer
dimDimensions
338mm x 122mm
chipCache
256KB512KB
ramMax RAM size
384MB
ramRAM type
72-pin EDO
pwrPSU connector
Unknown
connI/O ports
1x 
Disk-on-Chip Socket
1x 
Floppy interface
2x 
IDE interface
1x 
PS/2 keyboard
1x 
PS/2 mouse
1x 
Parallel
2x 
Serial
cardExpansion slots
1x 
PICMG 1.0 (PCI/ISA)

Also known as:

  • DSM Computer 96.M2991

Known issues:

  • DALLAS RTC coin cell empty

The motherboard's Real-Time Clock (RTC) chip contains a coin cell that may have drained, causing the loss of CMOS settings. This can result in an inability to save settings, causing system instability or failure to boot. To fix this, the RTC chip can be replaced with an equivalent or repaired by cutting into it and soldering on a new external coin cell holder. Replacement guides are available at https://github.com/necroware/nwX287 or https://github.com/necroware/nw12887, depending on the actual chip used.

Last updated 2024-03-20T22:36:49Z
Score is 8.4/10
3 files available

Vendor: AMI [1 entry]

POST string
Note
Core Ver.
BIOS Ver.
Last edit
POST string
51-0813-001658-00111111-071595-82439HX-000_10_T2
Note
Core version
071595
BIOS version
Last edit
pwr 2022-12-19

Vendor: Award [2 entries]

POST string
Note
Core Ver.
BIOS Ver.
Last edit
POST string
03/30/1999-i430HX-2A59FMHEC-00
Note
Core version
4.51PG
BIOS version
Last edit
pwr 2022-12-19
POST string
03/30/1999-i430HX-2A59FMHEC-WA
Note
96.M2991
Core version
4.51PG
BIOS version
Last edit
pwr 2022-12-20
drv 1 driver available
Name
Version
OS support
Size
Filename
Name
Version
3.00
OS support
1987os2 OS/2 Warp 3.0 1993win Windows NT 3.5x 1995win Windows NT 4.0
Size
unknown
Filename
doc 3 board documents available
Language
Release date
File
Last edit
Language
English
Release date
File
Last edit
pwr 2022-12-19
Language
English
Release date
File
Last edit
pwr 2022-12-20
Language
German
Release date
File
Last edit
pwr 2022-12-20
chipdoc 12 chip documents available
Chip
Language
Release date
File
Last edit
Chip
Language
English
Release date
File
Last edit
pwr 2022-08-14
Chip
Language
English
Release date
File
Last edit
pwr 2023-08-20
Chip
Language
English
Release date
File
Last edit
pwr 2022-08-14
Chip
Language
English
Release date
File
Last edit
pwr 2023-08-20
Chip
Language
English
Release date
File
Last edit
pwr 2023-08-20
Chip
Language
English
Release date
File
Last edit
pwr 2023-08-20
Chip
Language
English
Release date
File
Last edit
pwr 2023-08-20
Chip
Language
English
Release date
File
Last edit
pwr 2023-08-20
Chip
Language
English
Release date
File
Last edit
pwr 2023-08-20
Chip
Language
English
Release date
File
Last edit
pwr 2023-08-20
Chip
Language
English
Release date
File
Last edit
pwr 2023-08-20
Chip
Language
English
Release date
File
Last edit
pwr 2023-08-20

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