Features: Brand new and high quality Fully compatible with USB (Universal Serial Bus) Rev 2. Support RS-485/422 interface. RS-422/485 interface DB9 pin connector. Data (TXD) automatic flow control, zero delay design. Data transmission rate above 1Mbps. Support automatic handshake protocol. Support remote wake-up and power management. The USB bus takes power directly without external power supply. +/-15KV ESD Antistatic protection. Use environment: -25 C to 70 C, relative humidity 5% to 95%. Support Win98/Win2000/WinXP/Vista/Win7/Linux and so on. Specifications: Host interface: USB 2.0 Device interface: RS485 RS422 Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1x USB 2.0 to RS-485/RS-422 Adapter Cable 1x 6 pin Terminal Board 1x Driver CD