I connected a Toshiba MG08 16TB hard drive, which connected and worked flawlessly.
The internal casing is made of plastic, but it doesn't seem ready to break with the first disk change in the casing. If someone wants aluminum everywhere or wants to change the disk frequently, there are other solutions with multiple times the cost, but this case for €25 is perfect.

Reading the reviews from other users, I have to say that I was a little hesitant about buying this particular case. However, I believe that the reviews are a bit "harsh" and do not fully represent the product. I bought the case to install a Seagate 16TB for storing large files. The installation was effortless and the disk fit perfectly in the plastic frame. I had to loosen the screws of the controller board a bit to connect the disk to the SATA slot, and then tighten them again. The build quality is quite satisfactory for its cost of 20€. If you want hot swapping or are looking for better build quality, then there are more expensive cases that offer more.

Good interface but I would prefer it not to have plastic in the disc tray! It also reads the disc correctly without any problems! Highly recommended!

It is the 2nd RaidSonic case that I buy and it presents problems constantly giving errors like "format disk", "scan disk", "inaccessible disk", etc. As a result, the file backup gets stuck. The 1st one was for a 2.5" disk and I returned it immediately after 2 days. With the problem always being located in the cases because the disks inside are OK (see Patriot SSD 1TB and WD Gold 3.5" respectively). I DO NOT recommend buying this one. Look for something more reliable (e.g. LogiLink, ORICO, Inateck, Sabrent, etc.). The Sata/USB3.0 chip inside the IB-377U3 is the older JMS577 with Firmware version 130.05.00.01. So, FAR AWAY. Look for something more modern! This specific case is outdated now! It's a shame because it is very beautiful in appearance, but it is also expensive for what it offers.

Metal box on the outside but everything inside is plastic... and completely crappy plastic at that. Oh, if you plan on putting a disc in once and never using it again, go for it, it has a nice design. But if you plan on constantly changing discs, don't buy it, it will break on the third change... the plastic parts inside are completely crappy.

The 3 stars were given (I think there are too many) because I didn't expect a German company to remain stagnant over the years and the only thing it has managed to improve is the presentation of its products through its website. What do I mean? The installation is not as simple (according to some, easy) because if you don't unscrew the hard drive's mounting plate (SATA Controller - 2 screws) in order to adjust its height, so that it can be connected (technically speaking, "slid in"), the hard drive won't fit. (Now, if someone other than me is going to buy it, I would like to know how they achieve hot swapping.) Then, it closes with two black screws, which if not tightened properly, both the front (the face) and the back covers won't fit well and will be loose... However, even when I tightened the screws, there is still some play in the front cover, risking the plastic to break from the bottom (more than just a slight wobble).

I bought the Box to install a Western Digital Red NAS 4TB (https://www.skroutz.gr/s/3870224/Western-Digital-Red-NAS-4TB.html) that I bought for my backups.

Now let's talk about the performance - functionality part of the box. The controller is quite good. The casing is indeed metallic and I appreciate that (because I've only had it for one day) it adds a kind of cooling system for the disk, although after 2 hours (as I write this) it is slightly warm in the center of the box. The front blue LED is really good and functional. In terms of space, it is quite good (doesn't take up much). I only check (after proper configuration with the motherboard's BIOS - of course, this is a step beyond the evaluation) if the machine can finally post with the box connected and the disk working (legacy USB!).