There's also drives with a 4-pin DIN connector for 5 and 12v. And there's no standard for which side 5 and 12 are on.
Have killed a disk using the wrong power brick. And it had some data on it I had nowhere else.
Got the data back years later when I bought another similar drive and board swapped them - but this was in the era of 750GB drives where you could do that and it'd actually work.
https://www.google.com/maps/place/Warm+Springs+Ranch,+California,+USA/@38.652562,-123.0669582,808a,35y,327.77h,54.68t/data=!3m1!1e3!4m6!3m5!1s0x80840285ad3aec5d:0x9531d00935ee296a!8m2!3d38.6586961!4d-123.0702797!16s%2Fg%2F1thgbp5g?entry=ttu
Wow. I was nowhere close in the thread below... but then /u/cosmicseashore posted it there 26 days ago!
https://www.reddit.com/r/MacOS/comments/16zdhmx/if_im_not_mistaken_one_of_these_hills_in_this/