3Ft. (3 Feet) USB 2.0 to RS485/RS422 Serial Converter Adapter for Win7/8, Linux, MACFeatures Input: USB2. 0 Compatible for USB 1. 1,Output: RS485 RS422 Works with: Modems, smart card readers, terminal, POS (point of sale) devices, industrial control devices and RS232 peripheral upgrades No need external power, powered by USB port Regular voltage range of RS 485 port: 7V~+12V Support auto handshaking agreement Transmission speed up to 57. 6kbps in the distance of 1200m RS485 422 standard of TIA EIA Support remote waking up and power
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3Ft. (3 Feet) USB 2.0 to RS485/RS422 Serial Converter Adapter for Win7/8, Linux, MAC