DuoSwap MB971SP-B
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External docking stations are popular because of its flexibility and compatibility. However, because it is for external use, the interface limits the transfer speed of your hard drive while only allowing one to be use at a time. In a standard computer case, there are several 5.25” bays usually reserved for your DVD ROM drive, however, will not naturally fit with your 2.5” or 3.5” hard drives without some assistance. We also want to create a much faster and smoother transition from external to internal setups. Using the DuoSwap MB971SP-B, you will save precious desktop space by integrating both 3.5” & 2.5” slots into a single external 5.25” bay. This gives you the ability to expand and easily go from your external docking station to your computer in just seconds.

Having a way to easily exchange between the two industry standard SATA hard drive sizes is difficult to find. The DuoSwap changes all of this as it is a 5.25” hot swappable drive caddy for 2.5” & 3.5” SATA hard drive or SSD. The MB971SP-B has the most flexibility within a single external 5.25” bay allowing different hard drive combinations, featuring the ability to fit a single 2.5”, 3.5” or even both hard drives at the same time to produce the maximum storage capability. Inserting two drives into the DuoSwap gives you many benefits. With two drives inserted you can easily make backups of your 2.5” to your 3.5” drive or cloning your 3.5” to your 2.5” drive via SATA speed. This makes DuoSwap a perfect tool for upgrading from 3.5” SATA hard disk drive to 2.5” SATA solid state drive. You can also take advantage of your extra 2.5” and 3.5” drives you have by inserting them quickly and easily into the DuoSwap system. This saves you time and money because of the MB971SP-B tool-less hot-swap design.

The MB971SP-B is perfect as a quick setup accessory for your system as you can have your operating system in the smaller bay with the SSD and your main secondary storage in the bigger bay with high capacity 3.5” hard drives. Our fast and simple hot-swap system on the MB971SP-B provides easy access to your hard drive(s) and SSD. Then to ensure and prevent that dust does not enter into the computer system, a two part flexible anti-dust cover is integrated to help protect by closing when a 2.5” HDD/SSD is in use. The MB971SP-B also makes hard drive maintenance and monitoring easy because of the DuoSwap system utilizing individual hard drive LED’s, power and eject buttons. With two individual power buttons it allows you to power down each drive when not in use to save energy and extend your drives lifespan. The DuoSwap also uses two standard SATA connectors for drive data and a single power to help prevent compatibility issues. Moreover, for additional drive security, we designed an “Eagle-Hook” mechanism for MB971SP-B. It switches on immediately the 3.5” drive inserted and locks the 3.5” hard drive in place. So the 3.5” hard drive won’t fall out when you move the PC around.

The DuoSwap MB971SP-B works similar to other popular external docking stations however, packed with more features such as individual LED’s, power button and eject button. Most importantly, it allows the user to be able to access both 2.5” & 3.5” SATA HDD or SSD concurrently. Having an easy way to use your hard drives as they should be used, without the worry of installing or removing makes it a must have accessory for any personal PC, Lab testing PC or HDD duplication system.

Optional 2.5" to 3.5" SSD/HDD Converter


If you would like to use two 2.5" drives at the same time, the optional EZConvert MB882SP-1S-3B is an unique converter that is able to transform your 2.5" drive into a 3.5" HDD form factor within seconds without any tools.

Key Features
* Connects up to one 2.5” & 3.5” SATA HDD in a single external 5.25” bay for a space saving setup.
* Supports a single 2.5” HDD/SSD from 9.5mm to 12.5mm height. (Up to 9.5mm while the 3.5” bay is in use)
* Fast and simple tool-less drive installation.
* Able to run 2.5" & 3.5" SATA hard drive or SSD Simultaneously.
* Individual SATA 6Gbps connection for each hard drive or SSD.
* 2 part anti-dust cover protects system internals even when a small 2.5” SATA drive is used.
* Anti vibration kit for the 3.5” drive bay to help reduce movement.
* Eagle-Hook mechanism design added extra security to the 3.5” hard drive.
* Individual LED for both 2.5” & 3.5” bays.
* Easy access individual power buttons allows hard drive life expendability and energy conservation.
* Large individual drive eject button for hassle free drive removal.
* Perfect for any technical level of computer users.
* Support SATA 3 6Gbps.
3 Years Warranty
ICY DOCK DuoSwap MB971SP-B 2.5 inch + 3.5 inch Hot-Swap SATA HDD / SSD Trayless Mobile Rack Backplane Cage for External 5.25" Drive Bay
Product Name :
5.25" Hot Swap Drive Caddy for 2.5" & 3.5" SATA Hard Drive or SSD
Model Number :
Color :
Support Drive Size :
1 x 2.5" SSD/HDD, 1 x 3.5" HDD
Compatible Drive Type :
2.5" SATA ;3.5" SATA/SAS
Number of Drives :
Max Drive Height :
1 x 2.5" up to 9.5mm
1 x 3.5" up to 26.1mm
Drive Bay :
1 x external 5.25" drive bay
Host Interface :
2 x SATA 7pin
Power Input :
1 x 15 pin SATA power connector
Transfer Rate :
Up to 6Gbps (Depending on hard drive speed)
Support HDD Capacity :
No Limitation
Drive Cooling :
Metal heat dispersion
Structure / Material :
Metal and parital plastic
Support Hot-Swap :
Product Dimension (L x W x H) :
178 x 146 x 42mm
Product Net Weight :
Package Gross Weight :
RAID Status LED Indicator :
Drive Activity LED Indication :
Drive power: solid green; HDD access: flashing amber
Package contents :
1 - Device, 1 - user manual, 4 - 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
Product Reviews
Published on Oct 24, 2014
By PhilsComputerLab
ICY DOCK DuoSwap MB971SP-B Review
Link to video: https://www.youtube.com/watch?v=UvrmmGH-cBY
Published on Dec 30, 2013
By Newegg Products
ICY DOCK DuoDwap 5.25" Hot-Swap Drive Caddy for 2.5" and 3.5" SATA HDD/SSD Overview - Newegg TV
Link to video: https://www.youtube.com/watch?v=g5jFNuKVnkw&t=24s
By TechofTomorrow

Published on Jan 30, 2013


October 31, 2012

"The DuoSwap feels solid and has taken something of a beating by being moved about between machines and being poked and prodded by many especially at the 2012 Meet-Up. Still, the DuoSwap kept on performing very well. By utilizing a 5.25” drive bay the DuoSwap expands the number of 3.5” and 2.5” hard drives that can be put into a build. When installed in a MicroServer ODD bay the DuoSwap enhances the ease of use and versatility of everything from business and home production systems to multiple test builds with the MicroServer."

Written by Tom Brokaw

Created on 30 August 2012

"Without a doubt IcyDock has brought amaizing products to the market that any consumer should be proud to own.

We had no performance issues and it is really a no brainer that IcyDock is the way to go!"

By Jim Clark

April 16, 2012

"I think that this is a great concept for this type of device. I like the ability to easily switch out drives, and I really like the idea of a fast boot drive and a large data drive in this device."

Monday, 09 April 2012 00:00

Written by Eric Stemplewski -skataneric-

"The Icy Dock MB971SP-B DuoSwap 2.5"/3.5" SATA Hot Swap Drive Caddy is a nice addition to any case. For people like me that do constant drive swapping and testing, the MB971SP-B is super easy to use and fits nearly everything out there. You can fit both a 2.5" and 3.5" while running them simultaneously. There is no loss in performance and the interface is simple and well laid out. I highly recommend the MB971SP-B for any technical user out there."

March 24th, 2012

by Mike Kowalski

"The Icy Dock DuoSwap 2.5"/3.5" SATA Hot Swap Drive Caddy did the job it was designed for very well. Aimed to make it easy to hot-swap 3.5-inch and 2.5-inch hard drives or SSDs in a desktop environment, it did just that without any hassle. Compatible with nearly every SATA drive, we found the flush-mount fit to work great and prevent drives being accessed from accidentally being removed."



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