Industrial gradeWith high performance quality processor chip FTDI-FT232, strong compatibility, can be applied to modem, barcode machine, tax control machine, set-top box, PDA, CNC machine tools, industrial machines and meters, etc. ^^ Port protectionRS485 Serial to USB adapter is ideal for industrial environment -provides 600w surge protection and 15KV ESD isolated protection on signal pins to protect costly and often sensitive control equipment against electrical damage ^^ LED IndicatorsMake the communication status more intuitive, always remind whether the link is normal or not. ^^ Baud rate921, 600bps 300M/38, 400bps 600M/9, 600bps 1.2KM ^^ Support systemUSB to RS485/RS422 converter It easily lets you connect RS485 or RS422 device, Support Win2000/2003/2008/2012/XP/Vista/7/8/ 8.1 /10/CE/Mac/Linux etc.