I need drivers for legacy product

I have a salvaged Corollary 8x2-AT (extended ISA) with white sticker on an IC chip: “Corollary 8x2 60-0121-01” and on the edge of the board 90-0000443-001 8x2-AT" and a white sticker: “121046A0631” (S/N?). I found Legacy drivers on Digi.com but only CM and 8x4 product. When I tried installing the 8x4 drivers, it asked for “rotary switch settings” and there are no rotary switches on this board. The external 8-port box is identified as 8/tcfm+ I need help finding SCO Open Server 5.0.4 drivers for this product.