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Item#: N82E16817576012

Mediasonic H82-SU3S2 3.5" Black SATA I/II/III USB 3.0 & eSATA ProBox 8 Bay External Hard Drive Enclosure

  • 3.5"
  • USB 3.0 & eSATA
  • Up to 8TB

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  • Specifications
  • Warranty & Returns
  • Reviews

Learn more about the Mediasonic H82-SU3S2

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Customer Reviews of the Mediasonic H82-SU3S2

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  • Anonymous
  • 3/12/2016 11:49:29 PM
  • Ownership: more than 1 year
  • Verified Owner


Pros: n/a


I've been using this case for 1.5 years as the storage solution for my home NAS. Since the beginning the USB interface would sporadically disconnect and sometimes reconnect automatically and sometimes reconnect after power cycle. This has been exceedingly inconvenient as this may happen during a large copy operation or while watching a movie.

I originally thought this was due to the USB interface this was plugged into (A Raspberry PI Mini PC) and ignored the errors, even though they happened regularly. Recently, I transitioned this device to my top of the line Intel 1151/Z170 machine fully expecting the sporadic disconnects to cease and to my horror they continued. At this point I decided to start seriously investigating the problem.

Someone on the Mediasonic Forum said that this was due to bad hard drives and not the enclosure. I checked my HDDs using S.M.A.R.T. and nothing was wrong. To be 100% sure it was the HDDs I moved all the drives to the native SATA interface on my Z170-based motherboard. After that I experienced weeks of error-free operation with the HDDs.

It wasn't looking good for the enclosure. I emailed Mediasonic's tech support and described my problem. The tech support guy made me check the firmware version of the device and instructed me to upgrade the firmware. I did that and then reinstalled the hard drives in the enclosure.

After a couple of days operation it seemed like the enclosure was fixed, no sporadic disconnects. Instead something much, much worse happened. The file system that was on the drives was totally corrupted!!! 1.5 years of no corruption and after new firmware, this. Good thing I learned a long time ago to keep multiple daily backups :)

I emailed the tech support again asking for answers and at the bare minimum to send me the old firmware back but since then (1 week) it's been radio silence.

I've done a lot of research on these USB<->SATA interfaces and it seems they all suffer from instability like this. The vast majority of them are based on chipsets from a company called JMicron: Just search Google for "jmicron usb disconnect" and you'll see how many different devices suffer from similar issues. From what I can tell this company's chipsets are completely unreliable garbage. The worst part is that they lead the market when it comes to USB<->SATA technology, other chipsets are probably fraught with worse issues.

It gets worse, it's not just USB<->SATA technology, it's also alternative AHCI PCI-E SATA chipsets. Check the 1-star reviews for this card:

Consumer-level third-party SATA interface technology is complete garbage from USB to PCIE. If you want to store large amounts of data redundantly over multiple SATA disks, avoid this monstrosity. Instead stick to native integrated SATA on your motherboard chipset, preferably Intel (e.g. Z170, Z97). Sadly nothing else performs nearly as well or is as reliable. These companies are making a killing selling bad hardware to unsuspecting consumers and frankly it should be illegal.

So what am I doing now? I'm building a basic Intel B150-based system with 6 SATA III ports and using these trayless hot-swap SATA III backplanes: The best part about this is that I actually get Hot-Swap (whereas this horrible Mediasonic device doesn't actually support hot-swap despite SATA being hot-swap friendly) *and* native SATA-III speeds. Total cost: ~$600. This may *seem* more expensive but as a media server this includes both CPU + Storage, not just storage. If you are building a media server, I highly recommend this solution but make sure your SATA interface is connects to an Intel chipset, not these cheap third-party knock-off garbage chips.

On a related note, I'm selling / giving away this rip-off mediasonic garbage. To the next owner, I will warn that the USB interface should be avoided at all costs and to use the eSATA interface. The eSATA interface has its own set of issues (e.g. requiring a special eSATA PCIE card) and I personally can't vouch for its reliability, though, if I had to guess it's probably also garbage.



Manufacturer Response:

Thank you for your support on our product, we are sorry that you are having trouble with this unit, please contact our support for further assisstance, or call our support @ 888-231-7899.
If you like to visit our forum please follow this link:


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  • Calvin T.
  • 8/11/2015 9:05:35 AM
  • Ownership: more than 1 year

5 out of 5 eggsESATA user and Raid 5 users Beware

Pros: Does exactly what its supposed to

Cons: people blame this device for their lack of knowledge and ruin it's reputation

Other Thoughts: this unit is fine. Some of them may fail but most of the failures of this unit are caused by poor understanding of owners.
1. ESATA. Standard esata can only support 5 drives. In order for this to work with 8 drives it MUST use 2 esata ports in a cable (or maybe 2 cables). If you only get 3 of7 drives to work it's not cause it's defective but you have put 3 drives into the 1/2 of the unit on the first channel of the esata controller. That means 99% of the built in esata ports will only work with 4 or 5 hard drives. Don't blame this box for your lack of knowledge. I know I have 4 of the 4 port boxes and spent the time to learn exactly how they work.
USB 3. Is not magic. It only runs each drive one at a time. USB may not have a 4 drive limit, but it still requires your PC to send chunk of data for 1 drive then next drive then next. This means with 8 drives the poor USB3 port is overworked trying to feed 8 huge drives all at the same time. and especially because of.....
RAID on this box. That is the silliest thing I have ever heard. I went through the raid phase. I work in corporate IT with RAID boxes all over. IT's needed. For home use, no RAID of any flavor it actually usefull and in this box? DON'T DO IT. You will be disappointed. all the drives must be accessed in parallel (which is the main strength of RAID5.. but.. the controllers can only access 1 drive at a time, so the constant switching between drives put a huge burden (again) on the switching context of the particular interface. NOT ONLY THAT but RAID 5 in this box requires SOFTWARE RAID created and updated on the processor. I don't care what speed your processor is, and your USB3,000 is, you will bog it down with 8 drives sucking data in parallel. Not only that but to create RAID 5 data, it must read previous data off the drives, calculate the parity, then re-write it back (with correct calculated parity) to the 8 drives. As I said, don't blame the box if you load it down like that.
This box excels at one thing. LOTS of storage online. Keeps the drives cool. Puts them to sleep to reduce wear. Protects them from heat of PC if it overworks. It is NOT A A A RAID BOX. Don't make that mistake. Buy the one that had built in raid and it can handle it (kind of). I use my 4 drive boxes with 4 TB drives onboard. one for each laptop that serves as my media servers. That's 16 TB per server and I have 3 online now, and will setup the 4th one soon. That's why I am looking at this box, but don't trash it for your own mistakes. This box (just like my 4 drive boxes) will be great for me. And it would be great for you as long as you learn how it works and don't use it wrong. It's like trying to tow a farm cultivator with your family sedan. It will move it but you will not like the results.

5 out of 5 people found this review helpful. Did you? Yes No

  • Rigoberto C.
  • 1/26/2015 1:38:26 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsWorks well for intended purporses.

Pros: esata and USB 3.0 connection
8 Bays

Cons: Doesn't hold 2.5" drives, also comes with no adapters for 2.5" drives.

Other Thoughts: I have both the raid and non-raid version of this enclosure. Each of them their have pros and cons. Which I don't think is clearly stated. The non-raid version is only going to give the option for 8 individual drives. There are software options if you want do any mirroring, spanning, and or parity. But the box itself does not do any of these functions. This is a good enclosure if you plan to use different drives and store data on certain drives.

1 out of 2 people found this review helpful. Did you? Yes No

  • Michael S.
  • 1/2/2015 5:57:32 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

1 out of 5 eggsEnticing but underperforms

Pros: It has 8 bays and the price was right

Cons: I couldn't get it to recognize on my W8.1 system and after several hours in the attempt, I returned it. Website and documentation are dismal.

Other Thoughts: I was excited to give it a try, but ended up losing on the RMA.

Manufacturer Response:

Dear customer

thank you for your support with our product, if you have any questions or in need of technical assisstance, please contact our support at or visit our forum at

0 out of 3 people found this review helpful. Did you? Yes No

  • jeff p.
  • 12/4/2014 2:16:34 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsBought for NAS

Pros: Recognized a very wide variety of HDD's and SSD's. Easy setup, nothing to configure. Actually getting the drives recognized the first time required some drive shuffling, but was a relatively painless experience. PC I plugged it into does not have a SATA controller capable of port multiplying, but no issues recognizing all bays via USB3. As it turns out, USB3 interface is faster anyway.

After populating bays and using a PC to initialize and format the drives, I then plugged it into a Linksys WRT1900AC via eSATA where it recognized all volumes and published them without any additional configuration. File transfer speeds from PC's connected via local gigabit, 3ghz and 5ghz WiFi were identical at around 45mb/s peaking at 50mb/s. Strangely, connecting this to the WRT1900AC via USB3 didn't recognize all the volumes. Works out anyway as I leave this connected to the PC via USB3 and the router via eSATA.

Cons: While this unit is well built for what you get, and very reasonably priced compared to synology, qnap, etc - you aren't really getting alot for what you're paying. With the 4bay version of this regularly selling for under $100, there's no reason to not go that route instead unless you have to have more than 4 drives and only one port to connect them to. Neither data link to this device will allow read/writes from multiple drives concurrently; looks like they take turns round robin; setting up a software based raid via drive manager, or StorageSpaces might make managing storage easier by reducing the number of volumes, but there will be a bid hit to performance compared to drives on their own SATA ports for obvious reasons.

Other Thoughts: It's not a true NAS, doesn't have any RAID, not fast enough to want to run as a Windows Storage Space DAS, neither USB3 or eSATA port multiplying have enough bandwidth to concurrently access all drives simultaneously, It's brilliant for what it is; a simple box to power and cool all your extra drives, *perfect* as a NAS expansion if your router supports it!

5 out of 5 people found this review helpful. Did you? Yes No

  • Robert L.
  • 11/8/2014 1:02:58 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsNice quiet and solid unit.

Pros: Running Windows 7, using USB3 native from the motherboard, running 8 hard drives of different types and sizes.

Cons: Some hard drives like to "spin-down" that are in the enclosure. I have one WD "green" drive that does this. When I try to access the unit, sometimes I have to wait for the "green" drive to spin up.
Only blue lights! If something "goes"...does it change to red? (Don't know!) So, always "seeing" blue lights, looks like everything is fine. Different colors would be great.
Box label says that it supports Windows 8, but the enclosed "quick guide" does not say it supports Windows 8.

Other Thoughts: Before placing the hard drives in this unit, format and assign drive letters for each drive. One of the drives had information on it that I did not want to loose it by formatting, so it was not formatted and worked fine in the unit.
Recommend using a hard drive monitoring program to keep the drives in check like Hard Disk Sentinel.

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  • Anton K.
  • 2/17/2014 3:14:02 PM
  • Ownership: 1 day to 1 week
  • Verified Owner


Pros: I've been using the 4-bay Mediasonic boxes without any issues for the last 2 years. Just decided to upgrade to this one, and it's great... with the USB 3.0 connection. If you're going to use this with USB, stop reading & buy it now. But for eSATA, read the "Cons".

Cons: One thing that Mediasonic is not mentioning is that this box REQUIRES AN 8-DEVICE CAPABLE CONTROLLER. In other words, cards that can only support 2 or 4 external devices will flat out NOT work. This bit of information cost me 3 days of wasted time, and 6 E-mails. If I knew about this in advance, I would have bought an 8-device PCIe card.

This is the only reason I'm giving it 4 eggs instead of 5.

Other Thoughts: I'm happy to see that Mediasonic fixed the issue with the doors not closing right - the 8-day box has a nice horizontal swinging door, with a lock.

3 out of 3 people found this review helpful. Did you? Yes No

  • Benoit C.
  • 1/13/2014 12:12:47 PM
  • Ownership: 1 week to 1 month

4 out of 5 eggsVery good JBOD box!

Pros: Does what it says it does
Easy intallation
Well built
Not too noisy

Cons: *Need the right hardware to use (PCIE USB 3.0, SY-PEX20135)
No indepth manual

Other Thoughts: I needed a JBOD box for my home media server and this box is the thing!!! Easy to install, recognized all drives with data and performance is a whopping 100 to 120 mbsec transfer rate from drive to drive... You need to use it with the proper USB 3.0 card make the investment... SY-PEX20135...

I did not connect it the eSata way because I am using a WHS 2011 box which has a 2TB limit and I am using 4 TB drives...

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  • Bernhard W.
  • 12/3/2013 3:31:02 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsSecond one works fine

Pros: This is an update to my previous review:

The replacement box I got works (the USB connection light is now constantly on and the box works as intended). No drop outs, cool, quiet, exactly what I wanted.

Cons: Migrating 4 harddrives from separate external USB docks into the Mediasonic box was much more difficult than I expected. All except one of the drives were not recognized at first. Through testing I realized that it was not an issue with the Mediasonic box, but was the same with any USB dock. Apparently the previously used USB docks, in combination with using Windows Server 2012 Storage Spaces, made the drives unrecognizable elsewhere.

Mediasonic support was excellent - they even called me to help me problem solve.

I ended up having to 'Remove' each drive one by one from the Storage Pool, 'Clean' the drive using Diskpart, put it into the Mediasonic box, add it again to the Storage Pool & Rebuild the array. Overall this exercise took 2 days.

Other Thoughts: Obviously there are things going on with USB interface cards, that are not totally standard and drives may end up not being portable from one system to another without totally reformatting and starting new. Scary, as that possibly defeats the purpose of Storage Space drives being portable across systems independent of hardware.

1 out of 1 people found this review helpful. Did you? Yes No

  • Ironside P.
  • 12/2/2013 11:00:20 AM
  • Ownership: more than 1 year
  • Verified Owner

3 out of 5 eggsWorst Tech Support Ever

Pros: Fits 8 Bays, can run/mount them independently.

Decent looking box.

Cons: Constantly have problems with drives going to sleep (not using green drives). Today, after almost exactly a year, the box stopped working and drives won't mount.

Other Thoughts: Their tech support is worthless. Takes them days to answer e-mails if they answer at all. There is no tech support phone number on their website. I called the sales number looking for the tech number. An informal "Hello?" on the other end. He gave me another number, which I called, and same thing. "Hello?" "Is this Mediasonic?" "Yes?" "Uhh...I have a problem with one of your enclosures." "OK...yes?"

Terrible. And not fixed.

1 out of 3 people found this review helpful. Did you? Yes No

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Item#: N82E16817576012
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