The PocketDock USB/Line Out Adapter for iPod. Rather useful little keychain widget let’s you hook your iPod up to a standard Hi-Fi system using Line Out or to a computer with a USB cable. Instant party time. $29.95. The brand-new PocketDock with Line Out and USB is here! This indispensable device lets you connect the iPod’s docking port to a standard USB cable. No need to carry the special docking cable — the tiny PocketDock easily fits in your wallet, so you’ll never miss a connection again. When you’re on the road with your iPod, listening to your favorite hits, you may unexpectedly want to connect to another Mac or PC. When you need it most, you’ll probably find that you didn’t bring the special iPod docking cable — it’s at home connected to your computer.