IBM PS/2 MODEL 55SX & 55LS (8555) (Early)
Chipset
CPU sockets
FSB speed
16MHz
Form factor
OEM / Proprietary
Dimensions
330mm x 218mm
Cache
None/Integrated in the CPU
Max RAM size
8MB
RAM type
72-pin FPM
PSU connector
Empty
I/O ports
1x
Floppy interface
1x
Parallel
1x
Serial
Expansion slots
3x
16-bit MCA
1x
AVE (MCA)
Also known as:
- IBM 27F4667 FRU: 27F4666
- IBM 57F3003 FRU: 64F3732
- IBM 33F8159
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.
Notes:
Further info: https://www.ardent-tool.com/8555/Planar.html
Last updated 2024-01-01T15:58:28Z
Board info score is 8.4/10
Chipset
Chipset parts
1 file available
Vendor: IBM [1 entry]
POST string
Note
Core Ver.
BIOS Ver.
Logs
No drivers available
2 board documents available
Release date
File
Logs
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