Features Flat, corded keyboard including cursor and number pad Whisper keystroke keys with wear-resistant laser key legends Up to 10 million keystrokes 4 hotkeys (calculator, e-mail, browser, sleep mode) Plug & Play via USB connection 3 blue status LEDs Optimised for professional use in the office (GS approval) Awarded the \"Blaue Engel\" environmental seal Specification Weight (product): 530 g Total weight (with packaging): 725 g Cable Length: approx. 1. 80 m Storage Temperature: -20?C to 65?C Operating Temperature: 0?C to 50?C Current Consumption: max. 50 mA Warranty: 2 years Interface: USB Product approvals: Product dependant, see table \"Models\" System requirements: USB connection Delivery Volume: 1 CHERRY KC 1000 Operating instructions in hard copy Dimensions (product): 458 x 170 x 20 mm Packaging dimensions: 480 x 205 x 27 mm