kyutip and bonedoctor, the Pocket PC Mobility USB Sync/Charger Cable with Auto Adapter sold by Compaq for $24.99 is the same as the IPAQ SYNC CHARGER USB W/CIG LIGHTER ADAPTER sold by Buy.com for $9.95. They are both the USB Sync Charger for iPAQ Pocket PC (Belkin Part Number: F8Q1000). I purchased one from buy.com. It is definitely a "must have" accessory for your iPAQ (unless you are lucky enough to have a 3800 series which it won't work with.)