Product Description:
Apple Dock Connector to USB Cable iPhone / iPod charging / data cable – Hi-Speed USB – 4 pin USB Type A (M) – Apple Dock connecto.

Buy it for only 4$ here: Apple iPod® Dock Connector to USB Cable

This cable allows you to make a powerful connection between your GPS and your PC. Create routes and waypoints on your PC and transfer them to your GPS. Also it allows you to download map detail from MapSource CD-ROMs to compatible units. Cable features a USB connector. Does not provide wiring for external power.
Product Features

Usb Cable For GPS Navigation Systems
Allows User To Download Map Detail From Mapsource Cd-Roms To Compatible Units
Allows User To Connect GPS Device To Pc
Does Not Provide Wiring For External Power
Transfers Routes & Waypoints From Pc To GPS Device

Buy it for 10$: Garmin USB Cable