Pros: Solid. Has 2 40mm fan mounts on the front.

Cons: No screws included. If you need to mount a drive or two on the bottom shelf, and the drive bay you intend to insert this into has a bottom surface, you better find flat-head screws to attach your drives with, otherwise it won't fit in your bay. I couldn't find such screws, so this won't fit in the ODD bay of the ProLiant Microserver N54L (without hacking/dremeling it, as "lostass" seems to have done to it). Can only fit a 20mm thick 3.5" drive (have to unscrew the top shelf, attach the drive, then reattach the top shelf if the drive is thicker than 16mm or so), and only on the bottom shelf.

Overall Review: It's relatively expensive for what it is, a couple of machined pieces of steel and plastic. I'd be happier and glad to pay the price if it was a little better thought out, and included flat-head screws for mounting drives on the bottom shelf so that the bottom of the unit is flush and can slide right into the intended drive bay.