StarTech HSB220SAT25B 2 Drive 2.5in Trayless Hot Swap SATA Mobile Rack Backplane

Pros: Price: 4.0 eggs
Quality: 4.5 eggs
Performance: 4.0 eggs

I have several types/models of these types. Including:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817993014
and
http://www.newegg.com/Product/Product.aspx?Item=N82E16817998060

This one was my most recent purchase of the three models. They all do the same job and do it well. The only major difference is how the door opens. This one isn't any better or worse than the other two models I listed above. I think it comes down to preference. I will note that I feel this model is 1 of 2 where it would not be easy to break the latch from opening it.
I leave the choice to you. I have left reviews on the others as well.
SATA-III COMPATIBLE (but I have not achieved SATA-III benchmarks with my SATA-III SSDs).

Cons: The smaller traditional 2.5" spin drives have issues ejecting. Not very good for the ultra compact 2.5" spin drives.
I recommend you do NOT run/use two traditional spin drives in this type of unit without proper independant cooling (like a case fan directly blowing on it).
Although compatible with SATA-III devices, the benchmarks I have performed shows a max of around 375MB/s - or around 3Gbps - SATA-II performance.

Other Thoughts: Great for SSD drives. Not so great for traditional spin drives.
Verify that either ACHI and/or RAID features are enabled to use the hotswap features.

Like the other StarTech backplane I bought: (http://www.newegg.com/Product/Product.aspx?Item=N82E16817998060)
I have plugged in Crucial, OCZ, and Kingston SSD drives in this unit. They plug in and eject perfectly well.
I have plugged in Western Digital and Seagate traditional spin drives in this unit. They go in very easily - they do NOT come out easily.
My recommendation is to stick with SSD drives.

Pros: I build a lot of custom computers and many of my clients want me to build them a shuttle system. This drive bay complements the shuttle greatly with 1 internal 3.5" drive and a second 3.5" bay this allows for 3 HD's/SSD's and the CD-Drive as well. Packs a lot into one of the small shuttles.

Cons: Minor problem, but not worth knocking an egg--the lever the ejects the drives mechanically when you want to change them out works better with a mechanical 2.5" drive because at the rear of the drive there is some slcask on the top to allow space for the leave arm to tuck back in the back when the drives are fully inserted into the bay. SSD have a little trouble getting pushed back all the way, I have to push quite hard but it does go back all the way. Also on the SSD because of this the leaver is a little harder to eject the drive when swapping them out...you will need to be gingerly with SSD when removing them. I've done it "carefully" many times and have had no problems. ;)

Other Thoughts: Typical configuration in the shuttle XPC systems are 500GB to 2TB 3.5" drive, 500GB 7200RPM 2.5" drive and one SSD. Having three separate drives really speeds up drive I/O especially on media production and technical design systems. You could even set in 2 SSD's in raid.

Pros: This rack is fully compatible with SATA3 (6GBS) -- full speed-- according the the manufacturer.

Cons: None so far

Other Thoughts: Neweegg would be prudent to update its information on this item since very few mobile racks of this type are fully compatible with SATA3

Pros: - Two 2.5" drives fit in a single 3.5" slot; saves case space
- No need for any additional adapters (assuming you have a free 3.5" bay, of course)
- Hot swappable* (see below)

Cons: - Slightly expensive
- No security locking mechanism

Other Thoughts: This dual-tray setup is extremely useful, I use one bay for a boot drive and the second as a removable backup drive. You must make certain your BIOS has been set to AHCI mode for hot-swap support. Otherwise, the computer must be off when you swap. Drives slide in and out easily, there is a latching mechanism on the doors but no locking mechanism. One time (note: ONE time) I accidentally pulled out my system drive and crashed my computer; I'd like to see some way to security or "hard" lock the bays so I'd have to go through an extra step to get the drive(s) out when I wanted, to avoid any accidents. Overall, an extremely useful product, every 2.5" SSD (I have 3 from different manufacturers) and 2.5" hard drive (I have 7 from 4 different manufacturers) all fit perfectly and have worked beautifully. Highly recommended, would like to see a few bucks knocked off but I guess you can divide the price by two and get the amount it costs to manage each drive.

Pros: I've been running 2x wd scorpio drives in this enclosure for over 1 year in my domain controller (in a RAID1 config). I had initial concerns about heat, but as long as you have adequate cooling in your case, it doesn't seem to be a problem. The quality of the construction is top of the line.

Cons: price, but in this situation, you literally do get what you pay for.

Other Thoughts: I've seen other 2.5" drive bays at a local electronics store here and they're complete garbage. I'm writing this review because I'm seriously considering buying another one for my primary workstation so I can have a place to put my 2 new SSD's in to run raid0 with.

Pros: None, unless you count the notion behind the product.

Cons: Don't let the other reviews fool you as I did. This thing is useless. Most 2.5" drives do not fit into this thing without a lot of pushing which makes the so-called hot swap feature a joke since it will not eject the drives.

Other Thoughts: I bought this for my domain controller and had planned to push the OS onto a pair of 5400RPM drives in RAID1 and make them hot swap to make swapping easier when one fails. The design of the device looks nice but the drives don't fit into the slots easily which defeats the hot swap because to get a drive out, you need to dismantle it. This company claims they have a warranty but will do nothing for me because I refuse to install it into my computer to test if it actually works or not. It would seem that the slot size for hard drives is not covered. Don't waste your money here... to prove these comments, please look for my video review which I am planning to post soon.

Pros: Built solid
Nice push latch to open door
Nice blue HD Activity light

Cons: None, yet with the light being on all the time, I'm assuming that the HD is in idle when I'm using my Master 3.5 drive?

Other Thoughts: The unit is well built, with a nice eject system. Looks good in my Cooler Master HAF 922 (bought at Newegg) tower drive slot that has the conversion for a 3.5 drive, which this fit in perfectly. Have been running the RC window 7 for the last 3 months on a notebook drive from this unit, performs excellent.

Pros: Does exactly what it says, great, awsome cool, compact way to use space. Great way to use that old 3.5 inch disket drive bay. Hot swap ready too!

Cons: Maybe you could run into a heat problem with higher speed drives, but I haven't seen any troubles in temp. as of yet. (Running 2 drives @ 5400 RPM.)

Other Thoughts: My HP laptops power interface failed so I got this to retrive my data. Now I have two labtop drives in my PC, they work great as backup drives & movie/music storage devices. Awsome fix compaired to replacing my laptop.