P20U/P51U: The Shuttle XPC All-in-One P20U/P51U series comes with two COM ports as standard and can be upgraded with up to two additional COM ports using the PCP11. After installation, a total of four COM interfaces (RS232) with Sub-D connectors will be available. DS10U: The Shuttle XPC Slim DS10U series features one COM port and one VGA port as standard. If two COM ports are required, the existing VGA port can be removed and replaced with the PCP11. Main features: Product color: Black, Gray; Cable length: 0.21 m; Connector 1: 9-Pin D-Sub; Connector 2: 10-Pin (2x5); Connector gender: Male/Female; Compatible products: P20U, DS10U/P51U.