SpecificationsMfr Part Number: KB-IM8911UKeyboard: KB-IM898KBKey Number: 104 Keys English KeyboardInterface: USBButton Life: 10,000,000 timesCompatible System: Windows 7/ 2000/ ME/ VISTA/ XPOperating Travel: 2.5 ± 0.5mmOperating Voltage: 5VOperating Current: Operating Temperature: -20 ~ 60â"ƒOperating Humidity: 20 ~ 90%Cable Length: 1800 mmDimensions (WxLxH): 6.30 x 17.72 x 1.18 inchWeight: 1.281 lbsMouse: MO-9211UMaterial: ABSButtons: 3D Optical Scrolling WheelResolution: 800 DPISystem Requirement: Windows 98/ SE/ 2000/ XP/ VISTA/ 7Operating Voltage: 5VOperating Current: IC: ApexoneCable Length: 1800 mmCertificates: CE, FCCColor: Black / SilverDimensions (WxLxH): 2.56 x 4.53 x 1.38 inch