Das Keyboard Professional: Mechanical Keyboard Das Keyboard compares to the legendary IBM model M. Its best-in-class mechanical gold-plated key switches provide a tactile and audio click that makes typing pure joy USB 2.0 hub - The two-outlet high-speed USB hub allows to sync and charge your iPhone and iPod or any USB compatible devices. Extra-long USB cable - Das Keyboard sports 2-meter (6.6ft) cable that can go through your desk grommet in order to keep your workspace neat and tidy N-Key rollover - Das Keyboard allows up to 12 keys to be pressed simultaneously. Great for fast typists and gamers alike. System requirements - PC or Mac, any Windows including Vista, Linux, or Mac OSX