Micronics M55Hi-Plus (09-00273-xx) Rev A
Logs
chipChipset
cpuSocket
Socket 7 (PGA321)
speedFSB speeds
60MHz66MHz
moboForm factor
ATX (max 305 x 244 mm)
dimDimensions
305mm x 244mm
chipCache
512KB
ramMax RAM size
256MB
ramRAM types
72-pin FPM72-pin EDO
pwrPSU connector
ATX 1.x (20-pin ATX)
tag Also known as
connI/O ports
1x 
Floppy interface
1x 
Gameport
2x 
IDE interface
1x 
PS/2 mouse
1x 
Parallel
2x 
Serial
2x 
USB 1.x
cardExpansion slots
4x 
16-bit ISA
4x 
32-bit PCI
notes Notes

Use only bios Rev 03 and 04 on this board that has 4 audio connectors. Rev 09 and higher will result in a non-bootable system!

Last updated 2026-02-13T19:06:41Z
Board info score is 9.6/10
bios 4 BIOS files available

vendor Phoenix - 4 entries

POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
06/21/96 17:15:06
Note
no Sound
Core version
4.05
BIOS version
Logs
POST string
06/03/97 13:24:02
Note
w/ Sound
Core version
4.0 rel. 6.0
BIOS version
Logs
POST string
06/03/97 13:26:57
Note
no Sound
Core version
4.0 rel. 6.0
BIOS version
Logs
POST string
06/20/96 17:08:56
Note
w/ Sound
Core version
4.05
BIOS version
Logs
drv 8 drivers available
Name
Version
OS support
Size
Filename
Name
Version
3.00
OS support
OS/2 Warp 3.x Windows NT 3.5x Windows NT 4.0
Size
1.2MB
Filename
Name
Version
3.00
OS support
OS/2 Warp 3.x Windows NT 3.5x Windows NT 4.0
Size
1.2MB
Filename
Name
Version
3.3.0.2
OS support
Windows 9x
Size
569.7KB
Filename
Name
Version
3.02.0.0
OS support
Windows 9x
Size
577.8KB
Filename
Name
Version
1.12.000
OS support
Windows 9x
Size
841.8KB
Filename
Name
Version
Empty
OS support
Windows 3.1x Windows 9x Windows NT 3.5x Windows NT 4.0
Size
14.6MB
Filename
Name
Version
1.0
OS support
MS-DOS
Size
1.8MB
Filename
Name
Version
3.7B / 3.7D
OS support
MS-DOS NetWare Server 3 NetWare Server 4 OS/2 Warp 3.x Windows 3.1x Windows 9x Windows NT 3.5x
Size
1.6MB
Filename
doc 3 board documents available
Release date
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Chip
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image1 Image 1 of 3 (Microhouse)
image2 Image 2 of 3 (ThisOldTech)
image3 Image 3 of 3 (ThisOldTech)

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