DTECH serial to USB adapter allows you to connect RS422 or RS485 serial devices to computer via USB, without any troubles like computer freeze, IRQ, DMA or COM port conflict. With noise immunity and multiple drops capability (up to 32), the USB to RS485 converter with FTDI chip supports reliable signal conversion between serial devices and PC. With power, TX and RX indicators to help you check the connection and communication activity, which is very helpful when troubleshooting. High quality industrial USB serial dongle features baud rate auto-detected, zero delay automatic transmission, and automatic hand-shaking protocol, so you can get high speed data transfer over serial port. With 600W static surge and 15KV static protection to effectively protect a costly and sensitive control equipment against electrical damage.Note:Please do NOT connect the adapter to a serial device until the driver installed on computer. If need advice on driver installation, please email us any time.Specific TIA/EIA RS422/RS485 Standard; USB 2.0 Max Baud rate: 921600bps Max Distance (RS485/422 End): 984ft (300m) at 921600bps, 1968ft (600m) at 38400bps, 3937ft (1.2km) at 9600bps Working modes: asynchronous. Point to point or point to multi point; 2 line half duplex and 4 line full duplex.Application fields: Factory automation/Distributed control system, LED INFO display equipment , PLC control, SCADA, Measure instruments and monitoring system, CNC management, Medical automation, Building automation, Check on work attendance, laboratory testing and other devices where mission critical applications are requiredWhat?s Included1 x USB to RS485 RS422 Serial Cable 6ft1 x 9 Pin RS232 female to 5 position Terminal Board1 x Mini CD