Logitech M570 Trackman Wireless Trackball Mouse, 2.4GHz with Unifying USB-Receiver, Scroll Wheel, Programmable Buttons…

Amazon.co.uk Price: £36.84 (as of 25/07/2021 12:55 PST- Details) & FREE Shipping.

Make sure this fitsby entering your model number.
Stop chasing a mouse around : Your trackball stays in one place and puts control under your thumb, so you don’t have to move your arm to move your cursor. And its ergonomic shape supports your hand for comfortable control all day long
Wireless Unifying Receiver : This trackball includes the Logitech Unifying receiver. The tiny wireless USB receiver stays in your laptop, so there’s no need to unplug it when you move around. Plus, you can easily add a compatible keyboard, number pad or mouse – without the hassle of multiple USB receivers