ahh, the HP 9133A - the largest and heaviest external 3 1/2" floppy drive ever built. let's get it working! 🧵

whoops, surprise hard drive inside!

this one is a Seagate ST-506, a MFM drive with a whopping 5MB capacity!

after taking out 894375037 screws, the actual drive reveals itself.
oh yeah, the hard drive has a controller board on top of it. and on the controller board is this super weird potted electronics module. i'll have to look into that later.

@tubetime

it was made by an OEM that spun off xebec

@bitsavers that's wild