MOStron P55A-IV-BAT

Chipset

ALi M1531/M1543 (ALADDiN IV+)

Socket

Socket 7 (PGA321)

FSB speeds

50MHz55MHz60MHz66MHz75MHz83MHz

Form factor

Baby AT (max 220 x 330 mm)

Dimensions

220mm x 330mm

Cache

512KB1MB

Max RAM size

512MB

RAM types

72-pin FPM72-pin EDOSDR UDIMM168-pin EDO UDIMM

PSU connector

AT (P8-P9)

I/O ports

AT Keyboard

Floppy interface

IDE interface

PS/2 mouse

Parallel

Serial

USB 1.x

Expansion slots

16-bit ISA

32-bit PCI

Also known as:

MOStron P55AIV

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 2023-06-03T15:14:53Z

Board info score is 7.5/10

Chipset parts

ALi M1531 ALi M1543

Real-Time Clock chips

Dallas DS12887A