 As with the Yost standard, DECconnect uses a symmetrical pin layout which enables the direct connection between two DTEs.Another common connector is the DH10 header connector common on motherboards and add-in cards which is usually converted via a cable to the more standard 9-pin DE-9 connector (and frequently mounted on a free slot plate or other part of the housing).The following table lists commonly used RS-232 signals and pin assignments.