Daffodil WMS108B Wired Optical Mouse - 3 Button PC Mouse with Scroll wheel and Retractable USB Cable - For Laptop/Netbook / Desktop Computers - Supported by: Microsoft Windows/Mac OS Retractable Cable - No untangling of wires after transport Scroll Wheel - Easily move up and down documents and web pages USB Powered - No need to replace batteries Ergonomic 3 Button Design - Comfortable use for right handed operators Plug and Play - Quick set up for your PC