The HP Keyboard K1500 includes all the elements you're looking for to increase your productivity with improved and updated features. Spill-resistant design protects your keyboard from runaway liquids; 3 keyboard indicator lights glow green & illuminate your path to productivity; Quick calculations. Rapid data input. Built-in number pad adds convenience; Designed for comfort. Adjustable legs provide flexible wrist positions; No software installation. USB connection enables plug-and-play simplicity; Full-size keyboard allows maximum productivity and precise accuracy; No distractions here. Quiet keys maintain peaceful work & play environments; Requires Windows Vista, XP or later. Includes K1500 keyboard and documentation. Dimensions: 17.32" W x 5.94" D x 9.45" H