IEEE-488 Cable Adapter Plug GPIB Cable Connectors Data Line Transmission Lines

Among them, the GPIB interface card completes the GPIB bus and the PCI bus connection;. The GPIB bus is a digital 24-wire (flat interface socket) parallel bus. GPIB uses 8-bit parallel, byte-serial, and asynchronous communications, all bytes are transmitted sequentially over the bus.

eBay