The Tru Link Wireless USB (Universal Serial Bus) Host Adapter works with a compatible Wireless VGA, VGA+ Audio, or HDMI Adapter to enable your computer to communicate with connected devices. Use additional Wireless USB (Universal Serial Bus) Host Adapters to connect as many computers as you wish to a single device (Note- only one computer will work with a connected device at time). This wireless solution enables in-room wireless connectivity at distances up to 30 feet between the computer & connected devices. The highly secure, wireless connection is ideal for classroom or conference room presentations, or in households with multiple computers.