USB to RS-232 Serial Adapter for Windows 10, 7 (32/64bit) FTDI Chip Pro Adapter 3 ft. blue USB to RS-232 serial converter cable with clear USB jacket. Works by connecting the USB Type-A port into the host computer, and then connecting the RS-232 DB-9 male end to the female serial port. A standard USB Type-A port is all that is needed for powering the USB to serial adapter, it operates on bus power. No external power is necessary. LED activity indicators for Power, TX and RX serial signals. The LEDs allow a visual indication of the signal activity as TX and RX RS-232 signals are communicating. FTDI Chipset Inside: FT232RL and Ultra Fast 920K ZyWyn ZT232E for superior operation in serial communication. OS Compatibility: Windows 7, 8 and Windows 10 as well as Linux and Mac OS 10.X.