shielded serial RS-422 RS-485 to USB adapter cable supports windows OS, Mac and more; plug-and-play, No power supply neededUSB to RS485/RS422 converter easily lets you connect RS485 or RS422 device directly to your Laptop PC computer via USB portperfect 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 damageWith high performance quality processor chip (FTDI-chipset FT232) and I/O auto conversion circuitry which makes RS 485 to USB convertor one of the most reliable dongle on the marketThere are no IRQ and COM port conflicts, since the port do not require any additional IRQ, DMA, memory as resources on the system; RS485 for Half duplex and RS422 for Full duplex communicationProduct name: USB to RS-485/422 interface converterProduct length: 1.5 metersTransmission speed: data transmission rate above 1MbpsTransmission distance: 1200 meters at the RS-485/422 end (at 9600bps) and no more than 5 meters at the USB endTransmission interface: standard USB2.0, DB9 pinWorking mode: asynchronous work, point-to-point or multipoint, 2-wire half-duplex, 4-wire duplexBaud rate: 300-921.6Kbps, automatic detection of serial port signal rateSupport system: Win98/2000/2003/2008/XP/Vista/Win7 (32/64 bit)/8/CE/Mac/Linux, etc.Applicable environment: operating temperature -40-85Relative humidity is 5% to 95%size:10x8x3cmMaterial:ABScolour:As shownPackage Contents:1 x Serial Port Adapter CableOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.