Support STC MCU download Support 115200 high baud rate Support serial port setting debugging Distribute serial port debugging software No external power supply, USB port to the computer Application: MODEM CNC machine tools Industrial instruments and meters Detecting equipment monitoring system Automatic control equipment and Software supports WIN98, WIN2000, WINXP, WIN7, WIN10, VISTA Special support for WIN7 32 and 64-bit RS485 to USB 4 terminal block The driver download link; http://.mediafire.com/file/ab3qg44e69693ll/USB_%25E9%25A9%25B1%25E5%258A%25A8340%252BXP%252BW7./file Colour:black Material:Plastic + Metal Size:Length: about 30cm Package Contents: 1 x USB to RS485 Converter Adapter 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.