Zenith Data Systems (ZDS) 3557V4
Chipset
FSB speed 
Form factor
Max RAM size
RAM type
Also known as
- Unknown 85-3557-01
CPU sockets
PSU connector
I/O ports1x
AT Keyboard
1x
Parallel
2x
Serial
Expansion slotsEmpty
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
Riser connector for 16-bit ISA
Last updated 2024-09-25T06:01:16Z
Board info score is 9/10
Chips
-> Chipset part
Western Digital FE3010B (AT CPU & Peripheral Controller)
Western Digital FE3001 (AT Control Logic)
Western Digital FE3021 (Addr. Buffer and Memory Ctrl)
Western Digital FE3031 (AT Data Buffer)
-> Real-Time Clock
-> Super I/O
1 driver available
Name
Version
Arch
OS support
Size
Filename
Name
Version
4.00
Arch
OS support
MS-DOS
Size
10.957KB
Filename
1 board document available
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
1989-08-29
File
Logs
Chip
Release date
1990-10-20
File
Logs
Chip
Release date
File
Logs
Image 1 of 4 (geiger9)
Image 2 of 4 (geiger9)
Image 3 of 4 (geiger9)
Image 4 of 4 (geiger9)
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