Das Keyboard 4 Professional mechanical keyboard is made of the highest-quality materials and robust construction you can feel All of our keyboards are designed with high-performance gold-plated mechanical key switches lasting up to 50 million keystrokes When Germans design it you know it has to be goodUsed by Profesional Gaming Organisation Reason Gaming who had this to say about it-Das Keyboard produce top quality products which are pinnacle to our players\' success The N-key roll over features on the mechanical switches allow our players to cast spells and peak corners with confidence that the actions will complete The Build quality is fantastic which means we can travel to events all round the world without the fear of them breaking in transitFeatures- Cherry MX mechanical key switches with gold contacts- Dedicated media control with oversized volume knob- 2-Port USB 30 SuperSpeed hub - Up to 5Gbs 10x the speed of USB 20- Instant sleep button to save energy- Laser-etched key cap inscriptions to prevent fading- 105-key UK layout- Footbar to raise keyboard also functions as a ruler (you?ll thank us later)- Extra long 65 ft (201 cm) USB cable with single USB type-A connector- NKRO over USB for faster gaming programming or anything that makes you a formidable opponent in work or play- Anodized aluminium top panel- Firmware updatableTechnical Information- Cherry MX mechanical key switches with gold contacts- Dedicated media control with oversized volume knob- Two-port USB 30 SuperSpeed hub - Up to 5Gbs 10x the speed of USB 20- Instant sleep button to save energy- Laser-etched key cap inscriptions to prevent fading- Bumps on F and J keys (home keys)- 105-key UK layout- Footbar to raise keyboard also functions as a ruler (you?ll thank us later)- Extra long 65 ft (201 cm) USB cable with single USB type-A connector- Dimensions 18 x 68 x 80 inches (4572 x 17272 x 2032 cm)- Weight 29 lbs (13 kg)-NKRO over USB for faster gaming programming or anything that makes you a formidable opponent in work or play- Anodized aluminium top panel- Firmware updatable- System Requirements PC or Mac Windows Linux or Mac OS X- 2 USB ports or 1 USB port 1 PS2 port USB to PS2 adapter (included) Media controls are not available using a PS2 connection