Adds one RS-232 serial port by connecting to a USB port. 6 foot USB Cable length. LED status indicators for TxD and RxD for easy port monitoring and diagnostic. Supports up to 920k baud (920,000), Serial port protected with ESD protection of 15KV. OS Compatibility: Windows Vista, Windows 7, Windows 8, Windows 10, as well as Linux and Mac OS 10.X.