Today's computers don't come with parallel ports. But they do have USB! With this adapter cable you can still use your older printers with your newer computer. Converts a printer's parallel port for use with a USB port. This cable adapter is only compatible with 3-pin parallel ports: be aware that there are multiple types of parallel ports, some with 25 pins, some with 3. Please check your documentation or count the pins before you order! Length is 3 ft. Cables & Etc, LLC is the owner of the trademark C&E. This UPC is trademarked under C&E. Any violation will be reported to without any prior warning.