HP 752917-001 SFF Serial Port Expansion is a serial port expansion card listed for the HP RP5 Retail System. It is a spare part for adding serial connectivity to a compatible system.
The HP parts catalog identifies the exact part number as a serial port expansion card. Its role is to provide additional serial-port capability for equipment that uses a serial connection, such as peripherals in a retail system setup.
This description covers the card identified by 752917-001; the source does not specify the connector layout or package contents.