ABit AB-AN4 1.0
chipChipset
cpuCPU socket
Socket 3 (PGA237)
cpuCPU platform
486
speedFSB speeds
25MHz33MHz50MHz
chipCache
128KB256KB512KB
ramRAM types
30-pin SIMM72-pin FPM
ramMax RAM size
64MB
pwrPSU connector
AT-Style (P8-P9)
moboForm factor
Baby-AT (max 220 x 330mm)
dimDimensions
260mm x 220mm
connI/O ports
1x 
AT Keyboard
cardExpansion slots
3x 
32-bit VLB
6x 
16-bit ISA

Known issues:

  • Leaky Ni-Cd clock battery.

Remove the Ni-Cd battery as soon as possible and neutralize the leakage using white vinegar. Some more in-depth look may be needed to properly fix the motherboard. The battery can then be replaced using this https://github.com/wiretap-retro/Not-A-Varta.

Last updated 2023-02-08T18:44:49Z
 TRW ID: 13056
chipsetChipset
chipsetChipset parts
SiS 85C407 SiS 85C471
drv Drivers: not available
BIOS images: 1 file
Manuf.
POST String
Note
Core Ver.
BIOS Ver.
AMI
40-PAGF-001247-00101111-072594-SIS471G
072594
doc Documentation: not available
doc Other files: not available
Model
Speed
FSB
Voltages
L1 Cache
L2 Cache
L3 Cache
Core
Process
TDP
Intel i486 DX 50
50MHz
50MHz
5V
8KB
-
-
P4
1000nm
-
Intel i486 DX2 66
66MHz
33MHz
5V
8KB
-
-
P24
800nm
5W
Intel i486 SX 33
33MHz
33MHz
5V
8KB
-
-
P23
1000nm
-
Intel i486 DX 33
33MHz
33MHz
5V
8KB
-
-
P4
1000nm
-
Intel i486 DX2 50
50MHz
25MHz
5V
8KB
-
-
P24
800nm
-
Intel i486 SX 25
25MHz
25MHz
5V
8KB
-
-
P23
1000nm
-
Intel i486 DX 25
25MHz
25MHz
5V
8KB
-
-
P4
1000nm
-
No NPUs listed.

Disclaimer

The info found in this page might not be entirely correct. Check out this guide to learn how you can improve it.