Connects to any serial RS422 device via USB Type A 9 Way D Male to USB A Male connectors Plug and Play - USB bus-powered with no external power supply required Compatible with Windows, Mac and Linux operating systems 2 year warranty The Lindy USB to Serial Converter allows simple connection of peripheral devices featuring 9 Way Serial RS422 to a USB Type A port.With both USB Type A and serial connectors, this device is a perfect solution for connecting legacy RS422 equipment such as barcode scanners and industrial devices to notebooks and Macbooks, in retail, IT and digital signage scenarios.This converter is compatible with Windows, Mac and Linux operating systems. It supports hot-swapping so the user can quickly switch serial devices without shutting down their computer.The converter is USB bus-powered, it can be installed quickly and simply with no need for additional power supplies. Features Connector gender Male/Male Connector 1 gender Male Connector 2 gender Male Connector 1 USB