Why did old computer mice come with a ball inside, and why do new ones not have any? - Quora
Inside a Mouse - How Computer Mice Work | HowStuffWorks
Got a PC at a yard sale, it came with a mouse. Actually 4 mice. They were all dead. : r/pcmasterrace
Amazon.com: Uiosmuph Bluetooth Wireless Mouse Tri-Mode (Dual BT5.1+2.4GHz) USB C Rechargeable Computer Mouse Full Transparent Silent Mouse with USB Receiver & Type C Adapter for Laptop/Mac/iPad/Chromebook Grey : Electronics