The WM126 Wireless Optical Mouse from Dell gives you everyday wireless performance with excellent battery life Quick setup and easy installation. Your mouse comes ready to plug and play through the included receiver. No software or drivers are required. However, if you would like to make full use of Dell Universal Pairing technology and connect up to 6 compatible devices with one receiver, please visit Dell.com/pair to download the required software. Reduce cable clutter with the Dell Wireless MouseWM126, delivering essential functionality in a mouse with none of the wires.