Das Keyboard 4 Professional Wired Mechanical Keyboard, Cherry MX Blue Mechanical Switches, 2-Port USB 3.0 Hub, Volume Knob, Aluminum Top (104 Keys, Black) Description Das Keyboard 4 Professional is designed with best-in-class, Cherry MX Blue switches that have click tactile bump when the activation point is hit. The combination of the tactile feel, The psycho-acoustic experience and incredible craftsmanship all deliver an experience like no other. Sleek design, laser- etched key caps, and oversized volume knob make this one beautifully crafted machine. The most advanced mechanical keyboard on the market today. Features: 4 PROFESSIONAL MECHANICAL KEYBOARD - The thinnest mechanical keyboard in the world! The combination of tactile feel, the psycho-acoustic experience and incredible craftsmanship all deliver an unmatched typing experience that only Das Keyboard 4 offers. With a Das Keyboard 4, you'll type faster and longer. It feels so good, you won't want to stop. PREMIUM TACTILE EXPERIENCE - Best-in-class Cherry MX Blue mechanical key switches provide tactile and audio feedback so accurate it allows you to execute every keystroke with lightning-fast precision. Factory lubricated stabilizers on large keys for smooth typing with bumps on the F and J keys. Enjoy the tactile experience you love from a mechanical keyboard, with just enough sound to satisfy you - and not annoy your coworkers! FULL N-KEY ROLLOVER - Fast typists, productive professionals and gamers will appreciate that Das Keyboard 4 supports full NKRO over USB. No need to use a PS2 adapter anymore. Just press shift + mute to toggle to NKRO (works with both Windows and Linux). 2 PORT USB 3.0 HUB & MORE - The convenience to charge USB devices & simultaneously upload content through USB is right at your fingertips. A blazing fast 2- port USB 3.0 hub to transfer music, high resolution pics & large videos at up to 5Gb/second. Thats 10x faster than USB 2.0. Extra long 6.5ft(201cm) USB cable w/ single USB A connector. Dedicated media controls w/ LARGE VOLUME KNOB & instant sleep button. Magnetically detachable footbar ruler to raise the keyboard to an optimal 4-degrees. Product Details: Brand: Das Keyboard Connectivity Technology: USB Keyboard Description: QWERTY Recommended Uses For Product: Office Color: Clicky Tactile - Cherry MX Blue Switches Number of Keys: 104 Keyboard backlighting color support: Single Color Style: Professional w/ USB 3 Hub Product Dimensions: 18.11"L x 7.09"W x 0.83"H Material: Aluminum Brand: Das Keyboard Included Components: USB Cable Model Number: DASK4MKPROCLI-USEU Series: 4 Professional Cherry MX Blue Material: Aluminum Connectivity Technology: USB Operating System: mac os x Number of Buttons: 104 Number of USB 2.0 Ports: 2 Item Dimensions LxWxH: 18 x 6.8 x 1.3 inches Product Dimensions: 18.11"L x 7.09"W x 0.83"H Keyboard Description: QWERTY Hand Orientation: Ambidextrous Switch Type: Clicky Number of Keys: 104 Color: Clicky Tactile - Cherry MX Blue Switches Style: Professional w/ USB 3 Hub Keyboard backlighting color support: Single Color Recommended Uses For Product: Office