Features: brand new and high quality USB to RS485 or RS422 converter It easily lets you connect RS485 or RS422 device directly to your Laptop PC computer USB port for Ideal for industrial environment, provides 600w surge for protection and 15KV ESD isolated for protection on signal pins to protect costly and often sensitive control equipment against electrical damage With high performance quality processor chip (FTDI-chipset FT232) and I or O auto conversion circuitry which makes RS 485 to USB convertor one of the most reliable dongle on the market 1.2m long extension serial RS-422 RS-485 to USB adapter cable supports for windows 10 8 7, for Mac and more plug-and-play, No power supply needed There are no IRQ and COM port conflicts, since the port do not require any additional IRQ, memory as resources on the system RS485 for Half duplex and RS422 for Full duplex communication Specifications: Serial Protocol: RS485 or RS422 Specification: USB 2.0 RS485 and RS422 standard Chip: FTDI Max Baud Rate: 460800 bps USB-bus Powered, No External Power Needed. Automatic hand-shaking protocol supported. Built-in Static and Surge for Protection up to 600W 15KV ESD for Protection (Electro-Static Discharge) Supports Multiple Terminals up to 32 RS-485 or RS-422 Devices Transmission Distance: up to 1200 meters for RS-485 or 422 end Material:PVC Length: Approx 1.2m or 3.93ft Note: 1.Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Converter Cable Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store