CableMax USB 2.0 Serial RS-232 DB-9 MINI Adapter with Detachable Extension Cable FTDI CHIP Adds one RS-232 serial port by connecting to a USB port High speed serial port with the baud rate up to 921.6K bps Serial port protected with surge protection of 10KV Installed as a standard Windows COM port OS Compatibility:Windows 98, Me, XP, 2000, 2003, CE, Vista, Windows 7, and Windows 8 as well as Linux and Mac OS 10.X