HP 30459-69002 - Peripheral interface controller (PIC) board (HP-IB interface board) - Peripheral Interface Controller (PIC) Board (HP-IB Interface Board) - Goes in Slot 5 ONLY if No Other Boards are in the I/O Extender Unit (Moved from Slot 4 in CPU Retail
HP 28650-69102 - HP-IB interface board - HP-IB Interface Board - for the HP-PB I/O Board Slot(28650B) Retail
HP 30243-69001 - LANIC board - LAN network interface board - LANIC Board - LAN Network Interface Board - Goes in Slot 3 of the CPU Unit (as an Option Board) Retail
HP 28615-69004 - Fiberoptic peripheral interface board - Fiberoptic Peripheral Interface Board - for the HP-PB I/O Board Slot (P/O 28615A or 28616A) Retail