German-engineered mechanical key switches: Das Keyboard compares to the legendary IBM Model M. Its best-in-class mechanical gold-plated key switches provide a tactile click that makes typing a pure joy.N-key rollover: Model S allows full n-key rollover with an included PS2 adapter, and 6 keys with USB. Great for fast typists and gamers alike. USB hub: The high-speed USB hub allows you to sync and charge your iPhone, iPod or any USB compatible devices. Media controls: Das Keyboard sports media controls for quick access to volume, mute, stop, pause, next and previous track controls. Media controls are not available using a PS2 connection. Metadot Das Keyboard Professional is one of many Wired Keyboards available through Office Depot. Made by Metadot.