Pros: Cheap

Cons: Flimsy, no rails for drives to align the drives, making it very difficult to get them to line up with connectors. Drives are difficult to insert. Only one bay even worked, the lower bay wouldn't recognize that it had a drive inserted. I wish I could get the time back that I wasted on this useless product. Return shipping is almost as much as the drive housing itself.

Overall Review: The back of the housing is labeled HDD 0 and HDD 1. The inside of the housing has bays labeled HDD 1 and HDD 2. Which is which?

Pros: Works great and makes it easy to put the HD in and slide it out.

Cons: None

Pros: I have used many of these to mount SDD's and they work great. Yes, you have to be careful that you don't break one of the doors off when you are ejuecting a disk drive, but remember that those doors are not crowbars. You cannot exert a lot of force on them. Further, don't leave them unlocked and flapping around when you are assembling your system. Exerting upware or doward force on a loose door is a good way to break one off.

Cons: I have seen a lot of comments that the screws don't fit. They don't fit a 3 1/2 inch disk drive bay very well, but they fit a 3 1/2 to 5 1/4 inch floppy drive adapter perfectly. You can use the screw holes on the sides or the bottom because they are identicaly to a floppy drive. Now I admit it would have been nice if the manufacturer had noted that in the documentation, but now you know.

Overall Review: I wouldn't use these racks for conventional disk drives because I think they would probably get pretty warm. But for SDD's they work great.

Pros: 1-SATA power. Made of aluminium.

Cons: Does not work with SATA III 6G SSDs!
I contact the manufactures website to query, and was e-mailed that it would support SATA III.
NOPE!

Overall Review: After installation, BIOS posted very slow (if all all), due to searching for drives. If I got past the BIOS psot, Windows 7 would not start!
I give up. This is the 4th mobile rack I've tried with SATA III SSDs. 2 of them I fried (SIIG), 1 didn't like it (Rosewill), and this one (much like SIIG).

Pros: I love these devices. I build Asus 1u servers and the cheap ones do not have hot swap so I just jam a couple of these inside the case and have 4 drives. Make sure to use 9.5mm drives and these are limited in height.

Cons: None

Pros: Low priced.
Compact.
Have not had any electrical problems.

Cons: Cheap plastic door that flexes every time it's used and eventually snaps off.
Screw positioning made installation inconvenient.

Overall Review: I've had 30 of these in service for over a year. If the doors were solid, I could give it a four or a five. They _will_ eventually snap.

Comments: If you like it, just give it five stars, if you dont buy the more expensive one, for this price, it is perfect

Comments: With a slow ventilation fan pointing right at it, my WD Blacks run at 34C. This is a pretty good hard drive temperature, according to the Google server farm statistics that compared hard drive temperatures and longevity.