USB2.0 to -485/RS422 industrial grade protection high-speed converter Adopt British main chip; fully compatible with USB (Universal Serial Bus) 2.0 Support -485/422 interface, with 400W protection -422/485 interface DB9 pin connector Data (TXD) automatic flow control, zero delay design Data transfer rate above 2Mbps Support automatic handshake protocol Support remote and power management The USB bus takes power directly without external power supply. Support Windows95/98/2000/XP/VISTA/WIN7/WIN8/WIN10/NT.IMAG Colour:gray Material:plastic Size:communication serial line:94cm Package Contents: 1 x USB to RS485/RS422/RS232 communication serial line 1 x CD Only the above package content, other products are not included. Note: Light 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.