Win3x.Org

Another one of my boards.

URL on win3x.org/uh19: http://www.win3x.org/uh19/motherboard/show/167
Photo(s) of the motherboard: Attached. This photo is of revision 93136-1.

Motherboard BIOS(es):
AMI, date: 15 sept 1994, version: 1.21, string: 40-E711-001770-00101111-121593-SIS471-H, download link here: https://1drv.ms/u/s!Av9hAvK9jHHDh7MXvRt ... w?e=kmuzdg
AMI, date: 29 jun 1995, version: 2.30, string: 40-E711-001770-00101111-121593-SIS471G-H, download link here: https://1drv.ms/u/s!Av9hAvK9jHHDh7MYASt ... w?e=vN1acy

Notes:
- Has gold plated SIMM slots which is unusual.
- Original EPROM BIOS chip is UV-erasable. Can be replaced by W25C512-45Z which is electrically erasable.
- There are more board revisions and some of them most likely support 3V CPUs (voltage regulator placeholders are right next to the CPU socket).

EDIT:
Also, it supports 20 MHz FSB (it's printed on the PCB).

all added, thank you