Microsoft Comfort Curve Keyboard 2000. Device interface: USB. Cable length: 1.5 m. Keyboard dimensions (WxDxH): 480 x 213 x 30 mm, Keyboard weight: 1117 g. Minimum processor: Pentium 233 MHz, Minimum RAM: 128 MB, Minimum hard disk space: 60 MB. Operating temperature range (T-T): 0 - 35 °C, Storage temperature range (T-T): -40 - 60 °C, Operating relative humidity range: 5 - 80 %