Pros: These units when working correctly will crunch in a few drives more with easy access and removal of drives. The easy setup rear SATA cable mounts are an ease to get to if cable management is done.

Cons: These newer units don't seem to have the same ventilation as the older unit did or some of the part are running higher temperatures. Other item I noticed was smaller wholes in the venting, green board looked to be repaired on all units?

Overall Review: o I did a few days of testing on and off trying to get these units to cool in the same manor as my older ones. Just installing the units with a similar configuration, I was 10-15 degrees Celsius higher and would go past the drives capability to function. After separating the 2 ICY DOCK units with a front case fan, I got 1-2 degrees drop. I cut out the excess cage material to get another 4-5 degrees. Placing a fan in the front of the case did another few degrees, but nothing when doing heavy data load kept the drives from hitting max heat and shutting down. Went to the MB155 and things dropped big time from the start. If you look at the venting on the outer case and back green board, big difference. Something I thought of from the start, why would you have metal at the base of the green board? Is this safe? Not happy it took me so long to find a cure now I can't return them for full credit.

Pros: Not sure, not going to trust a device that arrives and the PCB looks like someone spit chewed up cheese on it and barely wiped it off with a napkin.

Cons: arrived looking questionable. not looking like it would keep drives cool at all. The left most drive is nowhere near the fan or any holes for airflow.
Tried to call support, number listed rang for a while then disconnected.

Overall Review: I like the concept, but not the execution. How can your support number be nonfunctional? Looks like I might need to reach out to Newegg and see what they can do since the manufacturer doesn't seem forthcoming with a response.

Pros: Allows you to put 5 SATA drives into 3 bays.
Hot swappable

Cons: Port 1 failed after about a month, causing my RAID controller to spew error messages. Replacing this isn't exactly non-impactful.

Overall Review: I'm not sure that I would recommend it, since it failed so quickly and is an important part of the storage fabric. I'm not sure how a port fails, beyond QC. It's basically a circuit board with a SATA port attached.

Pros: - Good quality

Cons: - small and loud fan

Overall Review: Works as advertised and an easy way to squeeze 5 internal (3.5" or 2.5") HDD's into three 5 1/4" external bays. Many cases may require slight modification for the dock to fit as they often have guides for a standard 5 1/4" to slide into place. The guides will block the dock from sliding into place.

Dock uses three molex connectors to supply power, plus the obvious SATA cable for each drive.

I'm seen mention in other reviews that the trays are "cheap" or "flimsy" and I will agree that they are flimsy when they are empty. The trays ship with a plastic cross brace which is removed when installing a drive. The drive attaches to the tray using the standard 4 screws. So after the tray has the drive attached it is not flimsy at all, and it's only purpose is as a guide for the drive to line up and to lock the drive into the dock.

Also, the cooling fan on the back is kinda loud, and eats up even more room inside the case behind a dock which is already rather deep (drives slide in long ways). I simply removed it and rely on my case cooling which was modified anyway to support this type of use, to also keep the drive bays cool.

I should also note that there appear to be two versions of this dock. The older version was noted as supporting drives "up to" 4GB. The newer version supports drives "up to" 6GB. Having said that, the two docks that I'm currently using were purchased in 2011 and are the "old" version. But both docks recognize and function properly with a 6GB drive. So there seems to be some misinformation floating about.

Pros: 5 bays in a small space... whats not to love?

Cons: You may have to modify case a bit. I had to shave a few things like others - can't blame them for this though, they didn't make the case.

I too cut a piece of plastic to lay over the exposed circuitry in the back.

I have no true complaints except they ****** me on the rebate.....

Overall Review: I have this running in an ML150 G6 ESXi host with a fairly heavy load and have not noticed any issues with heat, not sure what others are doing which would cause it to need a bigger fan. I guess I may some day find out.

All in all its a pretty decent - I would buy another. 3.5" storage is way cheaper than 2.5".

Pros: Well put together and does everything they say. The fit was a little tight but its nice to have 5 drives watered down to a 3 bay fit. :)

Cons: Its a little costly that's why im giving it 4 stars.

Overall Review: Bought this for a RAID array thats nice and clean now, before i had wires every where and a slight heat problem. Also i need space back in my tower which it provided.

Pros: Drive bays function well and even with constant use (swap drives 2-3 times in an average day)
they still work several years later

Cons: The ThermalTake case i use required extensive remodeling in order to fit them into the drive bays properly. Mainly trimming internal structures.

no chaining. Each drive has a separate SATA interface instead of a single output +1 per bay

Overall Review: Ordered and installed 2 of these and am still happy years later

Pros: Fits 5 drives in a 3 bay space.

Cons: Case may need to be modified for this to fit. Fan is somewhat loud, but mostly ineffective. Drives run too hot. Fan failed and started smoking after about a month (fortunately nothing but the fan was damaged).

Overall Review: The cooling fan doesn't work very well because most of the area behind the drives is blocked by the circuit board.