This desktop set features a spill-proof design that resists coffee, soda and other liquids. It’s built to withstand accidental drops and bumps. It is also designed to deliver all-day comfort from its standard 104-key layout. The mouse has an ambidextrous design that feels great in either hand and delivers responsive control thanks to its high-definition optical sensor. Maximum Wireless Range: 30 ft; Connector/Port/Interface: USB 2.0; Wired/Wireless: Wireless; Operating System Compatibility: Windows® 7, 8, 10.