A prototype model I've been iterating on that uses a PCIe x16 slot and bracket (tall-profile) to mount 2.5" SSDs.

The print meshes with the SSDs using M3 screws, which somehow manage to fit in Some of them. SSD-grade mounting screws should work too, obviously.

ℹ Parts marked "Optional" can be swapped in or out at will. 

⚠ Parts marked "Holes" should be negated! Do not use EasyPrint to slice this model!

Still a prototype!! It might work. Let's hope!