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ICY DOCK 4 x 2.5 SATA 6Gbps HDD / SSD Mobile Rack / Cage in 1 x 5.25 bay - ToughArmor MB994SP-4SB-1
- Fits 4 x 2.5" SATA I / II / III HDD/SSD
- Accommodates Drives with up to 15mm Height
- Dual 40mm Cooling Fans
ToughArmor MB994SP-4SB-1 4x2.5" SATA HDD Hot Swap Mobile Rack
Introducing the Icy Dock ToughArmor MB994SP-4SB-1 Full Metal Quad Bay 2.5" SATA 6Gbps Hard Drive/SSD Hot Swap Mobile Rack Cage 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.

The MB994SP-4SB-1 is constructed of full metal to hold up in the toughest of conditions. It includes ventilation slots on the front and back for maximum airflow to keep your drives running cool, and an LED is placed on the front of each drive tray to give the user drive status at all times. The ToughArmor's full metal design is also perfect for industrial and medical devices that may require a flammability rating as the full metal material is considered to already comply with flammability requirements.

The MB994SP-4SB-1 utilizes our EZ Slide Mini Trays, making drive interchangeability and maintenance completely hassle free. The trays are built using full metal so that they are durable for many lifetimes, but will not weigh you down when transporting your data from system to system. And featuring a full cage design, the added top drive cover provides added protection while moving the drive. The trays are also designed to accommodate 9.5mm, 12.5mm & 15mm drives giving you the ultimate universal 2.5" hot swap bay.

Utilizing its small form factor, the MB994SP-4SB-1 is perfect for use in gaming PCs, small form factor cases where 5.25" bays are limited and large drive capacity or SSD's are needed. This also will benefit compact RAID 5 systems. It is built to function in the most demanding environments including military and law enforcement deployment, as well as manufacturing conditions such as embedded control systems and factory automation systems. The heavy metal design makes it ideal for placement in rugged environments.
- Heavy duty full metal construction with commercially designed for Medical & Military systems, Media servers, and IPCs, approved & used by Tier 1 companies.
- Perfect for rugged applications and complies to flammability requirements.
- 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.
- 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.
Model Number: | MB994SP-4SB-1 |
Color: | Matte Black |
Host Interface: | 4 x 7-pin SATA |
Drive Fit: | 4 x 2.5" SATA I / II / III SSD or hard drive |
Drive Bay: | Single 5.25" half height device bay |
Transfer Rate: | Up to 6 Gbps (depending on hard drive speed) |
Power Input: | Single 4-pin Molex power port |
Insert & Extract connection Via: | Direct SATA hard drive connection |
Structure: | Aluminum & SECC |
Drive Cooling: | Dual 40mm rear cooling fan + fan power switch
Metal heat dispersion |
Power Indicator: | Solid Green LED |
HDD Access Indicator: | Flashing Amber LED |
Dimensions (L x W x H): | 6.7 x 5.75 x 1.63" |
Weight: | 1.77 lbs |
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MB991SK-B | MB991IK-B | MB992SK-B | MB994IPO-3SB | MB994SP-4SB-1 | MB994SP-4S | MB994SK-1B | MB996SP-6SB |
ToughArmor | ToughArmor | ToughArmor | ToughArmor | ToughArmor | ToughArmor | ToughArmor | ToughArmor | |
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Number of 2.5" HDD/SSD Supported | 1 | 1 | 2 | 2 | 4 | 4 | 4 | 6 |
Supports 2.5" SATA HDD/SSD | ![]() |
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Supports 2.5" SAS HDD/SSD | ![]() |
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Supports SATA 6Gbps | ![]() |
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Supports SAS Dual Channel |
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Supports 1 x Slim ODD Drive |
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7 - 9.5mm Drive Height | ![]() |
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12.5 - 15mm Drive Height |
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Fits in 3.5" Floppy Bay | ![]() |
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Fits in 5.25" Device Bay |
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Lock on Each Drive Tray | ![]() |
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UL Listed | ![]() |
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Full Metal Construction |
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Designed for Enterprise | ![]() |
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Hot Swappable | ![]() |
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Active Power Technology (APT) | ![]() |
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Warranty & Returns
Warranty, Returns, And Additional Information
Return Policies*
- Return for refund within: 30 days
- Returns are subject to restocking fees and return shipping fees. Please click here to learn more about restocking fees and return shipping fees.
- This item is covered by Newegg.com's International Order Return Policy
- *Subject to applicable law
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-626-956-8800
- Support Email: tech@icydock.com
- Support Website
- View other products from ICY DOCK
Pros: Nice all metal construction and this is the locking version so you can't accidently push the front tab and eject the drives. Install was simple and it fit 5.25" slot perfectly. I'm using this with 4 Samsung 850 EVO 1TB drives in raid 0 to have a 4TB drive used for a number of VMware VM's that are doing continuous builds for software development.
Cons: This would be a GREAT unit if it had good fans - but alas - they put in lower quality fans. Combo ball / sleeve bearing and they are simply not quiet at all. If you have this in a rack system where you don't care about noise - then the noise is not much of an issue but from the sounds I am starting to hear - I don't think the lifespan of these is that great. Come on Icy Dock - for something like this unit - users will pay the extra $10 to have better fans - heck I have $1800 in drives installed so I would pay a bit more to have high quality fans that are not so loud. I ended up purchasing from Digi-Key a couple of OD4010-12LB fans and putting them in myself (and thus voiding the warranty but I'm ok with that). Much better - virtually quiet.
Overall Review: The locking mechanism is not for security - it is just to prevent accidental removal of a drive. Anyone with the smallest of tools or a key could force the tab open (bending the tab and making that tray unusable) so consider what your application is. But this is better than other units that have plastic locks. Again - if it came with better fans - 5 eggs. If you don't need heavy usage then consider this 4 eggs. But the fans supplied are simply not up for 24/7. The ones I replaced it with are rated for about 7 years of 24/7 usage but I did have to do some simple soldering - which to me is no big deal.