Yes magnets can affect HDDs. But it needs to be very strong and close to the HDD. I wouldn't worry unless you are directly attaching it to you HDD and even then it probably won't do much if anything at all.

Remember HDDs already have strong permanent magnets inside them. Probably way stronger then the one on the bottom of that support.

I wouldn't expect it to. I think mythbusters did an episode on this, and it took the strength of one of those car lifting magnet cranes to damage an HDD.

You would usually need a really strong electromagnet to actually kill a hard drive through magnetism alone.

I can't tell how strong that magnet is, but I wouldn't risk it with my data.

I have one in my case, attached to the metal part covering the PSU in a CM silencio case. I have a single 2.5" hdd in the same case, without any issues.

Fields from magnets can, just depends how strong and this applies to spinning hard drives not SSDs. We had an idiot at work once that decided to store a bunch of magnetic bases on the top of a tower PC. Corrupted the drive. This case there were quite a few of them maybe in a half dozen to a dozen range and they were the strong lockable ones for breadboards.

LOL You know what will damage a hard drive? A regularly used electric pencil sharpener on top of the case directly over the hard drive for a few years.

Ok so here is the situacian. I have rx 6800xt merc that definitly needs some kind of support. But down there is place for two hdds. I have one in top slot. So magnet is directly above 😶 thats why im a bit voried.

Here is another picture, but with hdd in botom slot.

I doubt it would affect anything, it takes a very large magnet to damage a HDD from outside the casing.