This is a hard drive enclosure, used for storing 3.5-inch hard drives.

Although it's quite simple to design a box like this:

I think it's not visually appealing enough.

I referred to a model and finally made this one, but I don't know where this model came from - I saw it in some files stored earlier. If someone knows the original source of this model, please let me know so I can annotate the remix's origin.

This model can be directly printed without supports and assembly .

The design features grooves on both the top and back surfaces, making it easy to stack them up.

Due to the slight differences in size between 3.5-inch hard drives, I added a lining to make it easier to securely hold the drive in place.