PB 386 33 Sockets
U9
8251
U10
8251
U48
DS1287
REAL TIME CLOCK BATTERY
U51
74LS612N
U77
80386
CPU
U79
80387
MATH CO-PROCESSOR (OPTIONAL)
U85
U86
74LS612N
U109
BIOS
U110
8273A
U111
8273A
U147
BIOS