Floppy disk
From MediaWiki

A floppy disk is a human portable data storage device, using a magnetized disc inside of a plastic casing to store data in magnetic form. In the case of human computers, this is usually in binary code. How exquisitely crude of them.
Floppy disks come in several forms, specified by width:
- 3.5 inches; these flop little, having a fairly rigid case.
- 5 1/4 inches, encased in flexible plastic.
- 8 inches, from the days when dinosaurs roamed the earth.
Chip Chase can tear a floppy disk in half with his bare hands.
One 5¼" floppy disk can hold the entire personality and memories of Optimus Prime.

