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A Wireless USB (WUSB) is a Universal Serial Bus (USB) built on ultra-wideband (UWB) technology, which uses a radio frequency (RF) link, rather than cables, to transfer information between compatible USB devices.
The USB Implementers Forum, Inc. (USB-IF) discourages the WUSB abbreviation and prefers to reference the term as Certified Wireless USB.
Techopedia Explains Wireless Universal Serial Bus (Wireless USB)
WUSB enables 127-point connections with compatible devices and has a signal radius of three to 10 meters, with signal strength ranging from 480 to 110 Mbps. Security is ensured via transmission encryption.
Key WUSB features include:
- Plug and Play (PnP) compatibility and hot swapping with other devices
- Compatibility with earlier USB versions. However, a Device Wire Adapter (DWA) or WUSB hub is used to to facilitate the wired to wireless transition, enabling the wireless use of USB 2.0 devices and WUSB host connectivity.
- Host capability, which may be used with a PC through a Host Wire Adapter (HWA) that connects to a USB port or the MiniCard Interface
- Support of a dual-role device (DRD), which works as a WUSB device, as well as a host with several features
