No protection is needed because it does not plug in the other way without force.
To recover from this you have to find an exact duplicate of the main board. Such is on the internet and sorry to hear about the loss.
First post, total newbie.
Made a forehead-slapping rookie mistake: I plugged in the Molex power connector upside down to the HDD in my old HP desktop.
Yes I had to force it a bit, and even that didn't tip me off that something might not be right! So, anyway I go to power on & boot up, and I get error messages telling me it can't read/detect/whatever the HDD. It was working just fine before. (Long story why I was messing with it to begin with.)
HERE'S MY QUESTION: does the logic board (?) for the drive have a fuse or some kind of protection for this kind of thing, so that when some dummy plugs it in wrong it won't totally fry the whole thing? I'm wondering if buying an external enclosure would allow me to still access the disk contents (yes, there is stuff I want to get off it).
Well, thanks for any help you can offer. Hope there might be some good news for me!