Embodiments relate to a system and method of identifying a cable terminal plug and port on a computer system. An aspect includes a method having a step of positioning a cable plug adjacent to a computer port, the cable plug having a passive transponder. An RF signal is transmitted to the passive transponder. The passive transponder is activated with the RF signal. An identification signal is transmitted based on receiving the RF signal. It is determined that identification signal matches an identification value of the computer port.