YSTD USB2.0 to RS485 Serial Converter Adapter CH340G Support Windows XP/7/8/Linux/MAC USB2.0 standard, backward compatible, in line with the standard RS485 Interface Protection: TVS tube protection, USB self-recovery protection Support Windows98/ME/2000/XP/WIN7/WIN8/Vista, Linux, Mac Support devices with RS485 interface: surveillance cameras, video capture device, fingerprint attendance machine, PBX, CNC machine, microcontroller, etc. This converter provides two way serial communications signal