Pros: 4 SSD's in a 5.25 slot. Good contruction. Only needs one four pin power connection. Hot swappable.

Cons: Must attach the SSD to a cartridge that slides into the cage in order to use it, so it is not a very easy to just swap in and out other SSD's unless you have extra cartridges that they are attached to.

Overall Review: I had four SSD's that where hanging off the side because I had no real place to put them. This is a great way to store them in the PC.