Logitech M570 Guide - How to open and how to fix connection issues. : r/ Trackballs
Logitech M570 Guide - How to open and how to fix connection issues. - Album on Imgur
Amazon.com: Logitech M570 Wireless Trackball Mouse – Ergonomic Design with Sculpted Right-Hand Shape, Compatible with Apple Mac / Microsoft, USB Unifying Receiver, Dark Gray (Discontinued by Manufacturer) : Electronics