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Item#: N82E16817994142

ICY DOCK ToughArmor MB994SP-4SB-1 Full Metal 4 x 2.5" SATA 6Gb/s SSD/HDD Hot Swap Mobile Rack Backplane Cage Module for 5.25" Bay (Fits 7, 9.5, 12.5, 15mm height drive

  • Fits four 2.5" SATA SSD/HDD in a 5.25" device bay
  • Support SATA 6Gb/s with no speed reduction
  • Heavy duty full metal construction
  • Dual cooling fans with On/Off switch
  • 3-year mfg warranty
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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Introducing the Icy Dock MB994SP-4SB-1 Full Metal Quad Bay 2.5" SATA 6Gbps backplane for use in a single 5.25" device bay. The MB994SP-4SB-1 is predicated off the incredibly popular MB994SP-4S, while taking its general concept but, with a SATA only interface and adding the fan power switch. In addition, there is only one 4 pin power connector that will reduce the amount of cables required. The MB994SP-4SB-1 allows for many more users to use this backplane in their homes with the reduced cost. The dual 40mm cooling fans to in addition to the power switch for the fans allow for the best flexibility - Turn off when using SSD's and on when using mechanical SATA hard drives. Furthermore, this device utilizes Active Power Technology, so that the device only power up if there are drives installed.

Learn more about the ICY DOCK MB994SP-4SB-1




Color: Matt Black

Host Interface: 7 pin SATA x 4

Drive Fit: 2.5" SATA I / II / III SSD or hard drive x 4

Drive Bay: Single 5.25" half height device bay

Transfer Rate: Up to 6 Gb/sec. (depending on hard drive speed)

Insert& Extract connection Via: Direct SATA hard drive connection

Structure: SECC

Device Power: Single 4 pin Molex power

Drive Cooling:
Dual 40mm rear cooling fan + fan power switch
Metal heat dispersion

Power Indicator: Solid Green LED

HDD Access Indicator: Flashing Amber LED

Dimension (L x W x H): 6.70" x 5.75" x 1.63"

Weight: 1.77 lbs.


Fits 4 x 2.5" SATA I / II / III HDD/SSD.

Accommodates Drives with up to 15mm Height.

Fits 4 Drives into a Single 5.25" Device Bay.

1 x 4 pin power connector to reduce cable connections.

Status LED on Front for Each Drive.

Full Metal EZ Slide Mini Tray System with Full Cage Design.

Small Form Factor Perfect for IPC, Servers, and Small Form Factor Cases.

Fan Power Switch Allow User to turn off the fans when using SSD.

Front, Rear, Top, and Bottom Ventilation Slots.

Dual 40mm Cooling Fans.

Heavy Duty Full Metal Construction.

Support SATA 6Gbps.

Top Cover for the Tray Adds Extra Drive Protection.

Active Power Technology - Device only power up if there are drive installed.

Quick Info


  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years

Customer Reviews of the ICY DOCK MB994SP-4SB-1

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  • Jeff M.
  • 11/5/2014 3:32:09 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsImpressive Quality

Pros: This thing is very sturdy and just feels like a high quality product should. I bought it mainly because I have an older Thermaltake case and getting SSDs in it has been a bit of a pain with various attempts at other products. This also allows you you use just one molex connector for four drives which in my case reduced some clutter. Also on another plus side, this worked with the quick release for my 5.25 drive bay so no issue there for me.

Cons: The only con is on me, I wanted this thing for quite awhile and I should've bought it much much sooner.

Other Thoughts: Its definitely overkill for me, I don't need to hotswap anything. What I do like is the fact it runs up to 4 drives off one power connector, locates my drives up and out to the way of my front intake fan, and has two fans to keep the drives cool, though they probably dont really need it.

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  • Ghyslain L.
  • 9/25/2014 4:07:15 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGood product

Pros: Robust construction
Fan included inside the HD cage
Help expand normal pc/server tower number of HD
ON/OFF fan switch

Cons: none

Other Thoughts: Could have thermostatic fan...

I have 5 of them inside a chassis and I am happy with...

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  • Anonymous
  • 7/6/2014 8:19:57 PM
  • Tech Level: Average
  • Ownership: 1 month to 1 year

4 out of 5 eggsWow -- supports 12V drives

Pros: + Only 4x1 enclosure I've seen for >9mm z-height *and* 12V drives (e.g. enterprise type, VelociRaptor, Constellation)
+ Great trays, very easy to swap
+ Fan is switched & only mildly audible when used
+ Single power connector (old school Molex type thankfully)
+ Individual set of green lights per tray
+ Looks good & construction is solid

Cons: + A bit too solid since it's heavier (and more difficult to install/uninstall) than necessary
+ Bad swap design: can't remove left side if right side is open
+ Trays screws are tiny, extremely short fastened against the underside of the drive -- hard to replace if/when lost
+ "Activity" LEDs impossible to distinguish from "power" LEDs
+ Also probably too bright for a home server though not blinding

Other Thoughts: After endless research I bought this because it both handled both 15mm drives and didn't have blue lights. Pretty happy with it except can't understand why the "SAS-compatible" model is $30+ more for basically a different port arrangement & no different components...

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

  • Juan A.
  • 2/7/2014 12:26:37 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsSolid 5 1/4" Enclosure

Pros: All metal construction. Very solid!
Discrete LED power/activity lights.
Dual fans with on/off switch.
Very nice looking design.

Cons: The LED lights are a bit too discrete. I would have liked for separate power and activity LEDs.
When a tray has a drive in it, it will light solid green. When there's activity, it uses the same conduit to transmit (from the back of the unit) an amber LED intermittent light. However, you can hardly tell when it flashes.
No reason to knock an egg off though.

Other Thoughts: I really like this drive tray. I've got two Samsung 840 Pro (256 GB) and two OCZ Vertex 3 (120 GB) in it.

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

  • James P.
  • 11/23/2013 7:05:58 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsgreat item once you get some screws that fit

Pros: Mild green lights - far better than oppressive blue lights
Quality full metal cage
Holds 15mm height HDD's
Fan has a switch to turn on/off if you use SSD's

Cons: Screw length. Ridiculously small - to the point of uselessness.

Other Thoughts: Fortunately, I had a vast supply of screws lying around and was able to replace the ones that came with the unit - and actually be able to secure it to my case. What is odd is I own two other different Icy Dock units that use the same sleds that come with different screws to secure the bay device. Those secure the bay device and don't interfere with the sleds.

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

  • Chris S.
  • 9/21/2013 10:22:41 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsExcellent storage solution

Pros: I was immediately impressed with the solid construction of this unit. The drive cage and sleds are solid metal and don't feel cheap.

It easily mounted in a 5.25" bay, but I couldn't use the tool-less mounting rails from my computer case because they interfered with the drive sleds. The unit does come with shallow screws that allow the cage to be securely mounted without affecting operation of the drive sleds.

I put 9.5mm thick laptop drives in the sleds, and there's plenty of room for thicker drives. The sleds fit nicely and latch securely in place. The sleds don't lock, but my house isn't exactly a high security environment.

This is a nice solution to get some extra storage in a case with limited drive bays.

Cons: none

Other Thoughts: I have pretty large exhaust fan on my PC case, so I turned off the fan on the drive cage. The faces of the drive sleds are perforated, and I can feel pretty good airflow at the front of the drive sleds.

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  • Alex B.
  • 2/26/2013 3:58:00 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggs

Pros: Cheap.
When it works, it works very well, easy to swap trays/nodes

Cons: Seemingly Design Flaws that lead to Major Frustrations

Other Thoughts: SSD's must be secured if your swapping somewhat frequently, or even infrequently to avoid damaging them.
When mounting the tray to drive bay, mounting brace screws locked trays in (never had this happen before) due to the poor design of the trays (they placed the mounting holes properly, but did a flaw in the trays causes even the slightest (about .5mm) excess in length of the mounting screw to lock the trays in. This resulted in me using only the rear mounting screw's, the frustration was just the inconviennce and problems it caused when a tray needed to be moved and disassembling everything.

Another interesting thing is that some of our SSD's did not work! All our SSD's are of the same brand/model with nearly identical formatting/partitioning, and about 20% of them would not work in these trays! We had to use 3.5'' - 2.5'' brackets, costing us both space and time.
I have no idea why this was the case, we swapped those SSD's to other tray locations and they would not work, they were properly mounted like all the other's we triple checked...

Basically, if your using $500 SSD's do not buy this device, I cringed mounting them in. The metal is flimsy and cheap, it is rebranded OEM manufactured from likely a CAM type factory in Asia that is new to server-grade products and can't follow the blueprints that icy provided them.

Overall I would recommend spending extra to get a "slightly" higher quality tray, to me the amount of lost time and hassle not to mention the scraping (if you slide it in as they recommend in the manual, I recommend opening it up to properly insert it, sliding it in will have the metal rub against the interface ports and may damage them).

If the drives are not properly secured within the trays, even off slightly, you may misalign the interface ports and if you were like me, and its your first time with these trays, then you will think its just a little stubborn and give it a push (this was before I realized that a tiny indentation caused by a screw was causing so much friction), then you will bend the rear interfaces, I do not blame them for that, I should have assumed that it would slide in as easily as previous trays, but as it was my first tray, I did not, that SSD ended up working fine in another slot, but that slot no longer worked. However I had 3 more tray's on three different server's so I learned quickly.

I would not recommend this to a colleague, perhaps it is suitable for a workstation and/or a server that has administrator's who have low hourly rates as buying these in bulk will likely cost more then you saved purchasing them.

Just my thoughts, I know a-lot of you had good experiences, and well, dealing with the purchasing of mass amounts of hardware I have experience with foreign (primarily CHN since their big shift in trade integrity governance two years ago from national to regional) companies and I would not be surprised to see that many of these reviews are in fact manufactured, if they are I a

1 out of 7 people found this review helpful. Did you? Yes No

  • Bradley E.
  • 1/8/2013 8:40:49 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsWell made, quiet

Pros: When the description lists it as "full metal" they aren't kidding. This sucker is heavy and the trays latch in very securely.

Though the fans can be switched off I found the noise with them on was an acceptable level, though fans often vary so keep that in mind. However, the computer is in a relatively noisy room as it is so I'm not sure I'd notice anyway.

By having only four instead of six drive slots, each drive tray can easily hold a thick drive and cooling seems like it won't be a problem.

Cons: The screws holding the latch to the trays may have to be tightened periodically because opening and closing the latches seems like it slowly backs the screws out. If the protrude they will interfere with the tray sliding in smoothly.

The screws to hold the outer case are very short, so if your computer case has any sort of quick removal sliders they may not reach properly.

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

  • Gaylord A.
  • 11/10/2012 7:48:54 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsWell thought out device

Pros: Great product. Does what it was made to do--holds four 2" drives and has LEDs to indicate HDD activity. I also REALLY like the one (1) power receptacle for ALL drives. My, how that reduces cable clutter! Just ordered another for my wife's pc.

Cons: None that I have found.

Other Thoughts: Screws are short, but easy to work around...only fasten the screws a couple of turns, and don't tighten any of them. Or, go through your PC scrap box and find some a tad longer. Be careful you don't use one too long, or you won't get the HDD in or out.
I have a large CoolerMaster case, and it has a neat push button device for securing peripherals without using screws, unless you just feel you have to on one side (?).
I also found it was easier to mount the hard drives by just trashing that metal top plate. Seems to work fine without it. A caveat here:::don't lose those screws that come with it for mounting the hard drives, and don't substitute any!
Overall, a well engineered product by a company who really knew what was needed for up-to-date PCs. Kudos to Icy Dock!

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

  • Jody S.
  • 8/22/2012 10:48:49 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsMinor flaws

Pros: All metal construction is solid. The drive cages are decent. Though the mechanism to remove/insert them is fidgety, since it's all metal I'm not worrying about breaking anything when wiggling with them or trying to get them all the way in. SSD fit in the cage with plenty of room to spare.

Cons: The supplied screws for attaching the whole unit in your case are far too short. They provided short screws to avoid you going too deep into the cage and interferring with the sliding action of the drive cages or worse hitting the drives. The problem is, the screws are about half as long as they should be. You could screw them through maybe a paper thin sheet of metal, but in my case the screws only barely stuck through the metal of one case, and similar for rails for another case.

You have a couple options, you can safely use longer screws on the holes towards the rear of the unit. If you used all 4 of these then it'd still be secure despite nothing near the front of the case. In my case though I needed to use rails which only screw into 1 spot in the back and one in the front. I ended up using regular screws in the back, and cut some custom length screws using my dremel for the front.

Other Thoughts: If they would provide slightly longer screws they'd still be able to avoid interfering with or damaging the drive cages or drives, but actually allow you to screw the cages in through anything thicker than a piece of aluminum foil.

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Item#: N82E16817994142
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