Interface: USB 2.0 (Also compatible with USB 1.1 ports). Operating System: Windows XP, 2000, Vista * Contents: Keyboard, Mouse, Nano Receiver (ships and stores inside mouse), 4xAAA Batteries, Software CD, Quick Start Guide * Ultra-Slim Design - Thin-profile keyboard and mouse designed to enhance your digital lifestyle * Ultra-Narrow Design - Built with a laptop-style keyboard configuration to allow for maximum desktop space-saving. * Low-Profile Keys - Quiet, soft-touch keys provide a crisp, responsive feel when typing * 2.4 Ghz Wireless - Enjoy the latest in reliable, hassle-free wireless technology * Limited One Year Warranty * Media Console - Play, Pause and help; control your tunes from the Media Console