Usage Tips:600W static surge and ±15KV ESD protection protects devices and ensures high speed data communication TX, RX indicators help you check communication activity, which is very helpful when troubleshooting; The shielded cable supports four wires full duplex, two wires half duplex; point to point, point to multi-point communication; mission distance up to 1.2 km at at baud rate of 9600 bps (the longer distance, the lower baud rate);Terminal block is well-labeled for you to easily wire it to your device correctly! Item Features / Specifications : Color: silver + gray Material: PVC Brand and Serial Protocol: RS485 / RS422; USB 2.0; EIA/TIA RS485 and RS422 standard; Chip: FTDI; Max Baud Rate: 921600bps; Max Distance (RS485/422 End): 984ft (300m) at 921600bps, 1968ft (600m) at 38400bps, 3937ft (1.2km) at 9600bps; USB-bus powered, no external power needed. Automatic hand-shaking protocol supported Item Length: 50cm / 1.6ft FTDI Chip supports the widest possible OS compatibility: Win 10, 8, 8.1, 7, Vista, XP, Linux and Mac Note: Scan the code to download<br > <br > Package Contents: 1 * USB to Serial Converter Cord 50cm 1 * RS422 RS485 Serial DB9 to Terminal Block Adapter 1 * User manual Only 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.