iConcepts USB Charger for Compaq iPAQ (3600 and 3700 series) Recharge your Compaq iPAQ Pocket PC using power from USB port Compatible with iPAQ 3600 and 3700 series Pocket PCs Charger draws minimal power from your notebooks battery while recharging your organizers battery Requires Windows 98, 2000, Me, or XP and available USB port