ToughArmor MB601VK-B
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U.2 NVMe SSD Compatibility    
The Next Generation NVMe Mobile Rack
The MB601VK-B is ICY DOCK’s next generation PCI-E based mobile rack with ability in supporting Intel, Micron, and Seagate ultra high speed 2.5” U.2 NVMe solid-state-disk in an external 3.5” floppy drive bay.
Superior Performance
Built with the next generation U.2 (SFF-8639) interface, MB601VK-B offers up to 64Gb/s of bandwidth and supports 2.5” U.2 NVMe SSD, SAS and SATA interface 2.5” solid state drives or SSDs. The superior performance of MB601VK-B provides the maximum amount of transfer speed for the most data intensive tasks; such as real time large database transfers and refreshes, massive bulk data swaps from multiple networks, VMware providing virtual operating systems for mulitple computers, and large scale editing of large multimedia assets of virtual reality, video, music, and other graphics between multiple workstations.

Comvenient Utility & Accessibility

The EZ Slide Mini trays offer the removable feature and make U.2 NVMe SSD interchangeability and maintenance completely hassle-free, which greatly reduced the overall downtime when a drive is needed to be switched. The tray is designed to accommodate 5 to 15mm height 2.5" U.2 SSD, creating a removable drive bay for U.2 NVMe SSD or any standard SAS / SATA SSDs. The Anti-Dust Flap helps prevent dust from entering into the device when the drive tray is not inserted.
Note: the host has to support NVMe hot-plug function in order for the OS to detect the swapped drive while the system is powered on. If you are having trouble detecting your M.2 NVMe SSD, please refer to FAQ.
The front of the MB601VK-B includes a status LED when the drive is powered on, off and accessed. Active Power Technology (APT) allows the status LED to be on only when a SSD is inserted into the enclosure. For drive security, the eagle-hook lock system on the tray makes sure your SSDs will not eject when not needed. Additionally, the 2 segment key lock provides extra protection to theft of SSDs as well as safeguards any sensitive data.

Full Metal Protection

Making sure that the material used is designed in a way where it can be relied upon for many years after its deployment, the MB601VK-B is constructed out of heavy duty metal throughout the entire device and is capable of holding up in the harshest environments. With the Full Metal design, the ToughArmor is perfect for industrial, military and medical devices that may require a flammability rating as the full metal material is considered to be compliant with flammability requirements.

Optimal M.2 to U.2 SSD Converter Adapter


If you have M.2 NVMe SSD, an optional ICY DOCK EXConvert MB705M2P-B M.2 NVMe SSD to U.2 NVMe SSD converter adpater can be used as an alternatative inexpensive solution to transform your M.2 to U.2 form factor without the need to purchase another U.2 SSD.


Which MB601VK is right for you?


If you are using a small/ medium-sized computer chassis with limited internal space, MB601VK-B is the perfect drive enclosure to accommodate a up to 15mm NVMe U.2 drive into any mini-tower, small form factor or home theater PCs (HTPC). On the other hand, MB601VK-1B is designed with a longer overall length in order to become interchangeable with MB601TP-1B drive tray, which can fit up to 110mm NVMe M.2 SSDs.

Compatible Drive Tray (Caddy)
EZ Slide Mini Tray MB991TRAY-B Drive Tray for ToughArmor MB607, MB699, MB991, MB994 Series
EZ Slide Mini Tray MB994TK-B Drive Tray with 2-Segment Lock for ToughArmor MB607, MB699, MB991, MB994 Series
Key Features
Fits 1x 2.5” U.2 NVMe SSD or 2.5" SAS / SATA SSD
  (NVMe U.2 host is required to accept NVMe SSD, SAS or SATA SSD)
Fits any external 3.5" drive bay or floppy bay
Supports NVMe 64Gb/s transfer rate
Supports SATA 6Gb/s or SAS 12Gb/s (single channel)
Accommodates 2.5" SSD with 5mm, 7mm, 9mm, 12.5mm & 15mm height
Eagle-hook lock system & 2-segment safeguard key lock keeps drives secure within the enclosure
EMI Grounding – protects SSDs from electrical damage
Heavy Duty Metal construction, perfect for enterprise applications
Anti-Vibration Technology (AVT) - only powers up if there is drive installed in the drive bay
Active Power Technology (APT) saves power by shutting the device down when no drive is installed.
Industry leading 3-year warranty against all defects
Complimentary support from professionally trained US-based technical support agents
Drive tray is compatible with ToughArmor MB991SK-B, MB991IK-B, MB994SP-4S, MB994SP-4SB-1, MB994SK-1B, MB994IPO-3SB and MB991U3-1SB * SAS / SATA SSD only
3 Years Warranty
Product Name :
2.5" U.2 NVMe SSD PCIe 3.0/4.0 Mobile Rack for External 3.5" Drive Bay(147mm Depth)
Model Number :
Color :
Support Drive Size :
1 x 2.5" U.2 SSD or SAS/ SATA SSD/HDD
Compatible Drive Type :
NVMe / SATA / SAS (Single channel)
Number of Drives :
Max Drive Height :
Drive Bay :
1 x external 3.5" drive bay
Host Interface :
1 x U.2 connector (SFF-8639)
Power Input :
Via U.2 (SFF-8639)
Transfer Rate :
PCIe 3.0 up to 32Gbps / PCIe 4.0 up to 64Gbps
Support HDD Capacity :
No Limitation
Drive Cooling :
Metal heat dispersion with passive cooling
Structure / Material :
Full Metal
Support Hot-Swap :
Drive Security :
2 segment key lock
Product Dimension (L x W x H) :
147 x 101.6 x 25.4mm
Product Net Weight :
Package Gross Weight :
Drive Activity LED Indication :
Drive power: solid green; HDD access: flashing green
Package contents :
1 - Device, 1 - user manual, 10 - screw, 2 - key
U.2 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
Purchase Links
Product Reviews
By: TheSSDReview - Les Tokar

Posted: January 21, 2018


"So recently… I realized that I have had two HGST SN100 Ultrastar 3.2TB SSDs lying around that have very little use, other than testing.  Yup… 3.2TB SSDs collecting dust.  So… a quick e-mail to Icy Dock and we have two FIT-Flex Trio Adapters, along with two Tough Armor NVMe U.2 SSD Mobile Racks in the mail.  This resulted in an additional 3.2TB of storage space on our newest ASRock X299 Test Bench.......Read full article


Published on October 6, 2017 by Schoondoggy


"In my basement lab, I am working on virtualization and containers. I got the itch for more speed. M.2 NVMe drives are great, but none of my servers have a slot for one. There are PCIe adapter cards for them, but I wanted to be able to move the drive easily between servers. Then I stumbled onto U.2 NVMe drives, similar specs to M.2, but they are 2.5” 15mm drive form factor. I picked up an Intel 750 800GB NVMe, open box deal on NewEgg, great deal! Searching for a way to make it removeable I was referred to Icy Dock. They had recently launched the MB601VK-B, single drive U.2 mobile rack for 3.5” drive bay. The MB601VK-B is a metal design that is very well built. It appears to use the same slide tray as many other Icy Dock products......"

Read more:






Frequent Asked Questions
Q: Can you recommend an add-on card that works with MB601VK-B?

A: The following add-on cards are compatible with MB601VK-B. We highly recommend using the official cable for the best compatibility.


Brand Add-on Cards Official Cables
HighPoint SSD7120 SSD7180 8643-8639-50 (50cm)
Supermicro AOC-SLG3-2E4   CBL-SAST-0957 (55cm)
9400-16i 9405W-16i 05-50065-00 (50cm)
05-50064-00 (100cm)




9400-8i8e 9400-8i
9440-8i 9480-8i8e
9460-16i 9460-8i
9500-16i 9500-8i 05-60005-00 (100cm)


9580-8i8e 9560-8i


We are currently certifying our NVMe enclosure with the major add-on card manufacturers. We will be adding compatible add-on cards to the list.

You can click here to report a compatible add-on card/cable. If you want to check the compatibility of add-on card(s) that are not on the list, please click here.

Q: I'm using Intel/Broadcom Tri-Mode HBA and RAID cards with the MB601VK-B, but the drives do not show up in my system.
A: The issue is caused by RAID card manufacturers using a different pin-out for Tri-Mode cards than is typically used for U.2 connections. When using the Tri-Mode cards with M.2 NVMe drives, a U.2 enabler cable must be used for Tri-Mode card to detect the M.2 drive, which reverts the pin-out to standard U.2 specifications. For more information, please Click here.

Q: My NVMe drive did not detect after inserting it back into the device while powered on?

A: For systems that support hot-plug function, while your system is powered on, each drive insertion and removal cycle will require a manual refresh from the operating system in order for the system to recognize the drive.


If you are unable to detect the drive after performing the manual refresh, your system might not support hot-plug functions. We suggest you check with the motherboard/add-on card manufacturer to see if it supports the NVMe hot-plug function.


Windows 10 / Windows 8 – In the search box on the taskbar, type Device Manager, then select from the menu, right-click on the disk drive and then select scan for hardware changes.


Windows 7 – Right-click on computer icon on desktop and select properties, click Device Manager, right-click on the disk drive and then select scan for hardware changes.


Image result for disk drive scan for hardware changes


Q: The mounting screws for the device seem to be too short to secure the device onto my system, what should I do?
A: The included M3*2.5L screws fit most metal sheets of the computer cases with 0.8~1mm thickness. For cases that have a wider 5.25" bay, make sure you place the device in the center to tighten the screw holes on both sides. Please contact us at if you have a problem securing the drive enclosure onto the drive bay.

Q: Is the ICY DOCK NVMe enclosure supporting the PCIe 4.0 standard?
A: Yes, all ICY DOCK NVMe enclosures support the PCIe 4.0x4 standard, with up to 64Gbps transfer rates.


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