Sabrent SBT-USC1M USB to RS-232 DB9 Serial 9 pin Adapter (Prolific PL2303) Allows any PC to connect serial devices and programs that communicate through COM ports 12-inch cable with standard USB Type A Male to standard 9-pin DB9 RS-232 serial connector PL-2303 Chipset for widest possible compatibility with Windows, Mac, Linux, and other platforms Programmable baud rate from 75bps to 12Mbps. Typical speeds up to 230Kbps Plug and play creation of a COM port. Powered by USB - no external power needed