Logitech M570 Guide - How to open and how to fix connection issues. : r/ Trackballs
Logitech M570 Wireless Trackball Repair - iFixit
Logitech M570 Wireless Trackball Mouse – Ergonomic Design with Sculpted Right-Hand Shape Compatible with Apple Mac and Microsoft Windows Computers USB Unifying Receiver Dark Gray 910-001799 | Fast Server Corp. www.srvfast.com