Engineered with vibration-less enclosure and hex screws, Das Keyboard 4 Professional for Mac has oversized HiFi-inspired volume knob with dedicated media and function controls that enable audio adjustments and access to Mission Control, Launchpad, and display settings. SuperSpeed USB 3.0 hub delivers 2-port 5 Gbps hub for fast high-resolution picture and video file transfers between USB devices. For accurate tactile and audible feedback, keyboard uses gold-plated mechanical switches.