StarTech 4-Bay 3.5in SATA SAS Trayless Backplane, 6Gbps (HSB4SATSASBA) | Hot-swap four 3.5in drives in three 5.25in bays, SAS II SATA III 6Gbps, Aluminium vented, Fan control, Keys

I originally bought two of these to enable easy swapping of drives in a backup server. They have worked flawlessly since then, running 24/7 for over a year. The build is robust and swapping out drives is very easy. I later added one to my desktop PC because I have a 24TB drive that runs very hot, but the built in fans in this enclosure also cool the drives far more than any case fan. Since moving the drive to the enclosure I have had no problem with overheating. So, great for swapping drives but also great for cooling drives.

Work as it should, i used this for mostley for sas drives you will need a sas card and a lead to get the correct speed and to work the sas drives, also can be used for sata drives as well or plugged direct to the motherboard for sata only but speed is limited to sata speeds. you can only use sas Drives with a sas card.

I am very happy with the function and quality of this unit. One thing I forgot was that since it does not require a tray for the hard disc drive cannot use with 2.5"drives without purchasing an adapter to convert them to 5.25" drives. A little bit awkward to pull out the drive when it has been ejected, but this is a very minor quibble.

used in a dell t320 for several months now, easy extra 3 slots in place of the empty 5.25" bays

I was slightly nervous about using these but I had an old tower case and an old server motherboard and wanted to create my own NAS so thought I'd give these a go. The worry was that the drives would be too cramped and run hot. Iniitally I ran 2 of these with four drives (2 per enclosure with a central gap) over a period of a month and monitored the temps. The drives ran consistently between 28 & 31 C. Then I loaded the final two and ran with all 6 ever since. Over two years these have run with the drives consistently between 28 & 31. Each drive has its own temp. and it's actually the drive, not the position as I tried swapping a couple round after a year to see if it made a difference. Under periods of really heavy load for an hour or more, one or two disks rise a degree then settle back. So enclosures and fans do what they are supposed to. Although slightly fiddly to fit 6 drives in two of these it wasn't hard.

Delivered in 7 days to north of Sweden which is good. I like the the design. 3 Sata connections and 2 power connections, after connecting it worked without problem no drivers needed. There's 2 dip switches for fan high/low led lights on/off. The fan seems good quality in low mode I can hardly hear it over pcs fans(I got a new PC 2015/16) HDDs holds good temp., I've pc on 24/7 for months. However one hdd bay (middle one) has stopped working within 4 month of buy!!! I've tried different disk new/old big and small, SATA doesn't seem to detect.(already worn out) Checked connections in PC which is fine. I haven't overused or changing drives 10 times per day or so, I haven't even used all HDD-bays at all time. Have changed disk max 50 times over a period of 4 month... In order of product it's written "return window closed 16 Sep. 2016" (a month after purchase) Product must have longer warranty than a month! Haven't contacted seller yet will follow up.

First off, the first one I received was faulty. The power led on the top tray was intermittent. It was replaced promptly however. The replacement unit works a treat though. The drive activity led feeds are taken from the sata cable via the supplied cables. This is like all the Startech equipment I have bought, well made and works. Update My 2020, one fan has failed. Easy to replace.

I've had one of these '4 drives in 3 bays' backplanes in my main PC for nearly 3 years now and it has performed absolutely flawlessly. It gives me 3 extra drives that tend to stay in the machine (2 are redundant daily incremental backups using Retrospect) and one bay that I use for weekly full backups in a archive sequence or import/export to any 3.5" drive. I agree with the other review on the UK site that it would be nice if less than 4 power connectors were needed, but I didn't find it a problem using splitters. Just about to buy the 3 drive 2 bay equivalent for another machine build!

This unit dropped in to my old desktop chassis. Very well made.

３．５インチHDDを４台だから、てっきり５インチ４ベイを使うものと思い込んでいたら ５インチ３ベイのサイズで４台納められるラックだったんですね。DVDドライブ外さずに済みました。 トレイレスでHDDをそのままガチャコンできるのも、ネジ留めの手間いらずでお気に入りです。 付属の電源配線も２パターン（２：１か１：１か）分が付属しているので、自分のシステムに合わせて配線できるし。 いまのところ快適に使えてます。

Well built and sturdy, the only downside is the extremely loud fan. For the price it is It should have been something more silent. I'll probably end u switching the fan later on myself.

Excellent product. Works as advertised. I am using it for my 15 drive Unraid server. The data connects via my SAS controller. Initially I had 15 drives stacked up in 3x 5 bay enclosures. Sketchy at best but it worked for a few years but it was heavy as hell. Now I have 4x 4 bay enclosures and I have an extra bay if I want to make it a 16 drive array. The heat of the array is better dissipated for starters and it looks a whole lot better. Its definitely more secure and a whole lot less sketchy. The largest drives connected are 10 TB.

No issues, fan on lowest setting is still audible but not loud imo, measured 30-35db with a phone app