Modified 3.5 to 5.25 hard drive tray. Requires M3 Nuts and M3 bolts

The M3 nuts have to be placed inside the slot where they will attack to the hard drive cage with the pointy side of the nut pointing up, not the flat top pointing up. You just take a hammer or something heavy and gently hit it until it sinks in all the way. Now, you can just mount the hard dive tray using a standard M3 bolt.

Exactly the same but I made it so that the tray is mounted with M3 nuts and bolts. It's now significantly more stable and secure. My goal was to minimize vibrations as they can cause hard drives to fail