StarTech 1 Port USB to Serial Adapter Cable not purchase until eventually you consider it.

The ICUSB2321X Professional grade USB Serial Adapter cable converts a USB 2.0 port into an RS232 serial port allowing you to connect to; monitor and control your serial devices. A durable; single cable design makes this the perfect solution for mobile technicians/administrators that require serial connectivity. Once connected; the USB to serial adapter retains assigned serial COM port values; allowing the same values to automatically be re-assigned to the port provided by the adapter in the event it is disconnected; then re-connected to the host computer. This innovative adapter offers a professional grade solution for connecting legacy or industrial RS232 serial devices to more modern computers; or computers with unused USB ports - perfect for connecting serial modems; barcode scanners or any device with serial sync through USB; eliminating the expense of upgrading the serial peripheral for USB compatibility. Backed by a StarTech.com 2-year warranty and free lifetime technical support.