Acer M9B

Chipset

Intel 440FX (Natoma)

CPU socket

Socket 8 (PGA387)

FSB speed

66MHz

Form factor

ATX (max 305 x 244 mm)

Dimensions

305mm x 244mm

Cache

None/Integrated in the CPU

Max RAM size

512MB

RAM type

72-pin EDO

PSU connector

Empty

I/O ports

Floppy interface

IDE interface

Internal SCSI

PS/2 mouse

Parallel

Serial

VGA

Expansion slots

16-bit ISA

32-bit PCI

Also known as:

Acer Altos 9000 Pro

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.