The Amulet Hotkey K4u is a 4-channel USB, Sun™ and PS/2™ keyboard, mouse and stereo audio switch. It enables four computers to be controlled from a single keyboard and mouse.

Compatibility
Any combination of USB, Sun™ or PS/2™ compatible systems can be connected and controlled from a USB, Sun™ or PS/2 compatible keyboard and mouse.

Audio
The stereo audio outputs of the four computers can also be switched (or mixed) through to a single set of speakers.

Sharing
The K4u also supports PC sharing (when connected to a second K4u) and USB hot-plug device switching.

Easy Setup
The K4u is configured using two banks of DIP switches fitted to the underside of the case. A diagram showing the function of these switches is fixed to the underside of the K4u.