Visit Amazon sites : http://www.amazon.com/gp/product/B00F4CP7LG?tag=gallianostore-20<br /><br />SerialGear? USB 2.0 to Serial High-Speed RS-232 Industrial Adapter Metal case with DIN-Rail<br /><br />Adds one industrial RS-232 serial port by connecting to a USB port <br />Full RS-232 modem control signals and hardwaresoftware flow control <br />LEDs of Power TxD and RxD for easy port monitoring and diagnostics <br />Powered by USB port no external power adapter required <br />128 byte transmit FIFO 384 byte receive FIFO
