IBM - 90X7390 - Motherboard 8580 PCB 90X7390 - IBM - System Board Motherboard 8580 PCB $317.95 $269.45
IBM - 84F7994 - Motherboard 20MHz PS/2 84F7994 - IBM - 8556/57SX 20MHz System Board Motherboard for PS/2 $191.75 $162.50