slim multimedia standard keyboard Mechanical Function: Switch travel: 3.0± 0.5mm Keystroke life: 10million times Key switch elasticity: 55± 7g Power Requirement: Working voltage: 5.0+ / -0.25Vdc Working current: Less than 30mA Power: Less than 0.5 wt Environment and Temperature: Working temperature: 0 -50 Working humidity: None Condensation under 20% ~ 90% humidity Specification: Product dimension: L466mm* W180mm* H20mm Key layout: 104/ 105/ 106 keys are available , 9 hotkeys Product net weight: 635g± 20g Description: Use high quality silicone dom with very good elasticity which makes you feel very comfortable Clearly printed letters with advanced UV oil coating protection to improve abrasive resistance Use high performance conductive film Products Compatibility: Support Windows 98 / 2000/ ME/ NT/ XP/ VISTA system Support all languages versions, compatible IBM PC/ PS2/ AT/ USB/ U+ P Packing: Color box size: 475* 200* 20mm Carton size: L485mm* W320mm* H415mm Packing method: Color box, 20PCS/ CTN. Two layers