This USB to Zipit Dock adapter and a special kernel makes USB host mode for the Zipit possible. Previously, the cheap and hackable wireless client needed a hardware modification to enable USB support. The new kernel bootloader, called U-Boot, makes the internal alterations unnecessary (see the demo after the break). Now the only caveat is one of voltage. Zipit only supplies 3.3V when running on battery so your choices are to only use USB when the Zipit is plugged into a charger, or use a powered USB hub. But if you’re already building a hub adapter it shouldn’t be too much trouble to add in the option for a battery-powered hub.