Tripp Lite RS232 to USB Adapter Cable with COM Retention (USB-A to DB9 M/M), FTDI, 5 ft. - 5 ft Serial/USB Data Transfer Cable for Barcode Scanner, Printer - First End: 1 x USB 2.0 Type A - Male - Sec... - U209-005-COM

Supports data transfer speeds up to 230 Kbps-double the speed of a built-in serial port
Automatically reassigns COM values to each port to avoid additional configuration
USB-powered, so no bulky or obtrusive external power supply is required
Double shielding protects against EMI/RFI line noise that can distort or destroy data
Compatible with Windows, Mac and Linux-works with most computers