http://www.ebay.com.au/itm/Dell-Wireless-Mouse-WM324-Lightwe…
The Dell Wireless Mouse WM324 is compatible with most Windows operating systems. Enjoy the freedom and flexibility of the Unifying technology by Logitech. Manage up to six total Unifying peripherals, such as a keyboard or other mice, with one Unifying receiver for easy transition between home and office. This lightweight, compact mouse offers maximum portability and comfort for mobile users. The curved shape minimizes wrist and hand stress and is designed for right- or left-hand use. Setup is fast and easy with the Unifying software.
Link it to the ebay site rather than the Dell site mate.