Connects any serial device with a DB9 female port to your computer USB port. Supports all RS232 serial devices such as printers, modems, barcode scanner, PDA, and digital cameras. It provides speed of up to 12Mbps and full duplex capabilities. When 2 or more UR-2000M2 are used, Windows will dynamically assign available COM RS232 port. Works with Windows 98, 98SE, ME, 2000, XP, Vista, 7, 8/8.1, 10 & Mac OS X. (REV 7; Connectors: USB A Male to DTE DB9 Male; Length: 6ft)