A couple of years ago, I repaired one of a pair of drives (I think they were 750GB) that had the connectors mysteriously snapped off[1] while I was poking around in a client's system.
It was a special system, Linux-based, running proprietary software for expensive proprietary hardware.
I apologized profusely. I got them some new hard drives coming right away. I found a forgettable donor drive in the boneyard that had a close-enough footprint for the connector, harvested it with hot air, and put its connector onto one of the broken client drives.
A little bit of dd and some mdadm magic later, and they were back in business with that RAID-1 array like it never happened (other than just a few days of downtime on a system they only used occasionally).
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A different time, 25 or more years ago now, I somehow broke a 4-pin Molex[2] power connector off of one of my own IDE drives. I don't remember the details, but I do remember that I fixed it by soldering a Y cable power splitter into the holes on the board. This gave me a drive that worked, and that had power pass-through. It was kind of nice to have (and it worked for years and years after that).
Anyway, I guess shit happens sometimes.
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[1] I wasn't rough with anything; I was just moving wiring out of the way, as one does, to attack the dust bison that had accumulated over the previous decade or more with some canned air.
I somehow broke the connectors of both drives, anyway. I can't explain it and I don't have to, so I guess I won't bother trying. They were fine when I started and they were broken when I finished.
[2]: Those aren't Molex connectors. Everyone calls 'em that, like everyone calls adhesive bandages Band-Aids, but the old drives used a design characterized by the Amphenol Mate-N-Lok connector design which had nothing to do with Molex.