For use with Garmin GPS systems consisting of a 4 pin connection, the Gilsson R110-12C AC/PC combination cable allows you to transfer such data as your waypoints and/or detailed mapping to and from your pc while powering your GPS system through an A/C power source. Its structure displays a rugged serial connection including screws at the connection point to your pc for additional strength and support. Compatible with Garmin GPSMAP 60CS, 76,GPS II, III, V, 12, 38 and Streetpilot III.