Amazon.com: Gomadic Hot Sync and Charge Straight USB Cable for The Garmin etrex 10 20 30 – Charge and Data Sync with The Same Cable. Built TipExchange Technology : Electronics
Classic Straight USB Cable suitable for the Garmin etrex 10 20 30 with Power Hot Sync and Charge Capabilities - Uses Gomadic TipExchange Technology - Walmart.com
Garmin eTrex Series - How to choose the right eTrex?
Amazon.com: Garmin eTrex 30x, Handheld GPS Navigator with 3-axis Compass, Enhanced Memory and Resolution, 2.2-inch Color Display, Water Resistant : Electronics