Pros: They are what they say they are, and they are not expensive.

Cons: None I know of.

Overall Review: Why would someone want these? Someone bought a PCIe RAID card with four eSATA ports. Someone is too frugal to buy costly enclosures. Someone made his own rack from shelf hardware and a hacksaw. Someone put the drives on top of an external power supply that was already quiet, but he replaced the fan blades with really quiet fan blades, so the cooling fan for the power supply also cools the drives. Someone powers the drives from the external power supply, and connects the drives to the external eSATA ports using these cables. Other people sell SATA II versions of these for $20+ (EACH).

Pros: I hope I discover some. I haven't powered it up yet. Please, may no smoke gush forth.

Cons: All of you who wrote positive reviews must have been lucky. I bought my unit over a year ago, but did not need it until now. ___ It could not be assembled with the supplied parts, because the screw heads protruded in such a manner as to prevent the tray holding the drive from sliding into the enclosure. ____ I had to clamp the screws in a vise and file them down in order to assemble this.____

Overall Review: What sort of quality control procedures permit shipment of a product that must be modified with the purchaser's tools simply to be assembled? I just read the review guidelines. What I had to do to __assemble__ this may cause New Egg to delete my review, because they might classify it as "References to aftermarket procedures or installation techniques not mentioned specifically in the original product documentation" Ha ha, what if the instructions say, "clamp the screws in a vise in your garage and file them until the unit can be asssembled."