STARTECH 24in Internal Usb Motherboard Header To ICUSB232INT1, 1 - Internal Ports: IDC (10 pin, Motherboard Header), 1 - External Ports: DB-9 (9 pin, D-Sub), Ports: 1, Interface: Serial, Bus Type: Motherboard Header, Card Type: Standard Profile (LP bracket incl.), Port Style: Integrated on Card, Chipset ID: FTDI - FT232RL, Serial Protocol: RS-232, Max Baud Rate: 115.2 Kbps, FIFO: 256 Bytes The ICUSB232INT1 USB to RS232 Serial Adapter lets you add an RS232 port to any desktop system that is equipped with an available USB motherboard header.