Pros: Well constructed, 4 screws to mount a drive on rails--not a big deal, lock securely in place, good value for the money; drives well ventilated. Have upgraded drives and the ONLY thing that has been easy has been the enclosure. (Motherboard chipsets and recognition of > 1TB drives is a much bigger problem.)

Cons: Odd assortment of SATA connectors: 1 SATA+Power, 2 SATA, 2 standard 5-pin power connectors, just be prepared.

Overall Review: Fan protrudes a good ways out of the back, be mindful if using in tight quarters (mine is in a media case with a mATX motherboard)