A dusty ISA network card. The main IC says FPX FP96C01 https://digipres.club/system/media_attachments/files/112/062/839/606/837/015/original/f6068356dbfc57c1.jpeg
The network card is an ISA card with no name on it, and the main chip is an FPX FP96C01 . Pretty sure this is an NE2000 clone, so a 10/100mbit card.