Wireless USB will run at the full USB 2.0 speed of 480mbps when within 10 feet of the base. Once past that limit, the speed drops to 110mbps with a maximum range of 30 feet.

However, wireless USB later will reach 1 gigabit-per-second speeds and faster, Ravencraft said. Initially, wireless USB will require an add-in card or plug-in device for a PC to use it. Eventually it will be built in, then integrated gradually more tightly with computing electronics, the same path wired USB took, Ravencraft said.

Wireless USB uses an underlying wireless communication technology called ultrawideband (UWB). Where 802.11g uses a relatively narrow frequency range centered on 2.4GHz radio waves, UWB uses a very broad range from 3.1GHz to 10.6GHz, Ravencraft said. The UWB signal levels are low enough that it appears to be noise to other radio communication technology.

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