Extends any DB9 cable or connects any serial device to a computer. This multi-purpose, straight-thru cable is fully-wired to support all RS232 applications including modem, serial printer, switch and other RS232 devices. Also works for mono/multisync video applications. Includes 2 hex nuts. Pin-Out: 1-1 / 2-2 / 3-3 / 4-4 / 5-5 / 6-6 / 7-7 / 8-8 / 9-9 / Shield-Shield. (Connectors: DB9 Male to Female; Length: 20ft)