Moxa Uport 1150, USB-RS485/RS422/RS232 Converter, compatible with USB 2.0, software selectable RS-422, RS232, 4-wire RS-485, and 2-wire RS-485, male DB9 and terminal block for easy wiring, serial transmission speed up to 921.6 Kbps, active (USB), TxD/RxD LEDs, built-in 15 KV ESD protection,