ToughArmor MB994SP-4S
Image Gallery
ICY DOCK ToughArmor MB994SP-4S 4 x 2.5" SATA 6Gbps/SAS HDD/SSD Mobile Rack / Cage in 1 x external 5.25" bay
Product Name :
4 x 2.5" SATA/SAS HDD & SSD Mobile Rack for 1 x 5.25" Device Bay
Model Number :
Color :
Support Drive Size :
2.5" SSD / HDD
Compatible Drive Type :
SATA / Single channel SAS (SAS host required)
Number of Drives :
Max Drive Height :
Drive Bay :
1 x external 5.25" drive bay
Host Interface :
4 x SATA 7pin
Power Input :
2 x Molex 4 pin power
Transfer Rate :
SATA 3.0 up to 6Gbps / SAS 3.0 up to 12Gbps
Support HDD Capacity :
No Limitation
Drive Cooling :
2 x 40mm fan
Structure / Material :
Full Metal
Support Hot-Swap :
Drive Security :
Product Dimension (L x W x H) :
170 x 146 x 41.3mm
Product Net Weight :
Package Gross Weight :
Drive Activity LED Indication :
Drive power: solid green LED; HDD access: flashing Amber LED
Package contents :
1 - Device, 1 - user manual, 26 - screw
SATA Connector Insertion Rate :
Humidity :
5%~65% RH
Operating Temperature :
0°C to 60°C (32°F to 140°F)
Storage Temperature :
-35°C to 70°C (-31°F to 158°F)
Compliance :
Warranty :
3 years
ICY Concepts
Prevent Server Drive Ejection From User Error with ToughArmor MB994SK-1B
When working with workstations, databases, and/or servers that requires front-loading, sometimes hard drives may be accidentally ejected by an inadvertent push of the eject button. This can cause failures to the system. With the ToughArmor MB994SK-1B 4 x 2.5" SATA/SAS HDD/SSD Full Metal Mobile Rack with Key Lock, the additional security lock on each drive tray not only protects the hard drive from being easily stolen, it also prevents accidental drive ejections that lead to system crashes. But you already have a MB994SP-4S, MB994SP-4SB-1, or MB994IPO-3SB and want a lock for preventative measures? Simply obtain the EZ Slide Mini Tray MB994TK-B and slide it into your MB994 series products and you now have extra protection for your hard drives!
Product Reviews
Posted by: Les Tokar

April 19, 2014

Thessdreview Article: Building a New Dual Intel/AMD Triple 2560×1440 Display 5Ft High PC System

ICY DOCK Sponsor Products: ToughArmor MB994SP-4S & MB996SP-6sB
May 22, 2012

Author: Adam Wilson

"The MB994SP has many things going for it. Not only is a sleek looking solution to keeping all your 2.5” drives in one convenient location, but it also cools them (if they’re mechanical) and keeps them safe."

>>>> Click to view the video review <<<<
January 18, 2011

by Andrew Edney

"As usual Icy Dock have delivered a product that does exactly what it promises. This is great if you have some spare 2.5” drives sitting around and you want to use them."
OCTOBER 12TH, 2010

Author: cjefferies

"The MB994SP-4S has excellent build quality, is easy to install and swap drives, and has good cooling. Other than the fact that drives cannot be locked in for security, it is a no-compromises device and I give it my full recommendation."
Sunday, 10 October 2010 00:00

Written by Ron Perillo -crowTrobot-

"The MB994SP-4S Quad Bay SATA Mobile Rack has all the hallmarks of an Icy Dock product we have come to expect. It is durable, conveniently functional and easy to install."
September 27th, 2010

Author: Jim Clark

"If you looking for more expansion capability in your SFF case (or even a full tower case), look no further than the Icy Dock MB994SP-4S."
Launch Date: Aug 2010

"There is no doubt that Icy Dock MB994SP-4S is a unique and exciting product since it can accommodate up to four 2.5" SATA/SDD/SAS HDD at the same time with only consuming a single slot of 5.25" external drive bay of a chassis. 2.5" HDD is seldom being used in desktop system due to higher cost than 3.5" HDD and its limited supportability by most of the desktop chassis. However Icy Dock MB994SP-4S has just broken the impossibility by supporting quad 2.5" HDD at the same with; ideal for those are looking for frequent & complicated data transferring, data back up."


ICY Tips & Industries Solutions
September 2015

How to customize and optimize a computer forensic workstation with CASELAB's Merlin SM8 and ICY DOCK's SSD/HDD high density storage kits for intensive digital forensic data analysis?
April 2015

Create High Density Storage Array with ICY DOCK ToughArmor 2.5” HDD/SSD Mobile Racks
October 2014

Prevent Personal Photos and Videos Leak
with ICY DOCK Storage Solution
July 2014

Safeguard your patient's critical information and records in an automated dispensing machine with ICY DOCK ToughArmor rugged hot swap storage enclosures.
April 2014

Increase the performance of your intelligent surveillance system with ICY DOCK SSD/HDD cage storage solutions
Jan 2014

Optimize your Mini ITX System for Small Business
or Home Servers, Gaming, and Media Center
using ICYDOCK Storage Solutions
November 2013

Maximize Storage Density - Build a Six
2.5" SSD/HDD RAID server with MB996SP-6SB
December 2012

How to Upgrade to 2.5” Hard Drive or SSD
in RAID and Expand your Storage Capacity
on your HP ProLiant N40L Ultra Micro Server
March 2012

The Most Flexible Modules for system upgrades
October 2011

Build a Compact Industrial Server with
MB994SP-4S, MB994IPO-3SB &
MB991IK-B mobile racks
Purchase Links
Frequent Asked Questions

Q: The mounting screws for the device seem to be too short to secure the device onto my system, what should I do?

A: For computer cases that have a thick metal sheet, the included mounting screws (M3*2.5L) may not fully secure the device. Please use longer screws (M3*4L) to secure the device or contact us at for replacement screws.




Support & Download
Copyright © 2021 ICY DOCK. All rights reserved.