Vintage Miniscribe #4225 20MB RLL 3.5\" Hard Disk Drive. Spins up and does it\'s automatic seek test, no strange noises. Believed to be working, but no way to properly test, so sold AS-IS with NO RETURNS. I cannot guarantee a 35 year old hard drive, with that said, it way work perfectly fine, it may not. This is part of the gamble one makes when purchasing an old drive like this.