Re: Unidentified Socket 3 motherboard. (Probably IBM)
Posted on 2023-08-24, 23:35
https://theretroweb.com/motherboards/s/atandt,-inc.-at-and-t,-inc.-globalyst-550-c Has a lot of similarities with the AT&T Globalyst 550 including the security/speaker/LED headers near the cache slot. That board also has a J53V jumper for CPU type selection in its jumpers manual. I would think this …