ToughArmor MB720MK-B V2 <span style="color: #FFFFFF ;opacity:0 ">ToughArmorMB720</span>
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Note: 03/17/2022 - The MB720MK-B V2 is designed to be compatible with NVMe host cards only. Therefore, due to circuit board's design differences, the recently introduced Tri-mode NVMe/SAS/SATA host cards are not compatible with the MB720MK-B V2. If you have purchased the enclosure and are experiencing connectivity issues with Tri-mode cards, please contact us at for further assistance.
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mb720m2k-bmb699vp-b_v2 mb699vp-b
M.2 NVMe SSD Compatibility Chart    

The ToughArmor MB720MK-B V2 is a Ruggedized Removable Quad M.2 PCIe 4.0 NVMe SSD Enclosure design for a 5.25" optical drive bay and supporting up to 64Gbp/s data transfer rates via OCulink (SFF-8612) interface. It simplifies the process of installing or removing M.2 NVMe SSD by using the removable drive trays with tool-less adjustable M.2 drive locker, making it easy to change drives at any time without open the computer case or dealing with drive mounting screws. For best cooling performance, the MB720MK-B V2 is equipped with dual cooling fans in the rear to remove the heat generates by the high-speed PCIe 4.0 SSD. On top of that, each drive tray comes with an extra-large heatsink lid and thermal pad to ensure your SSDs are at optimal temperatures. As part of ICY DOCK's toughest line, the MB720MK-B V2 is made out of full metal construction with metal barrel key locks for maximum protection.

Superior PCIe 4.0 Performance

To unlock the full potential of the PCIe 4.0 NVMe SSD, each drive bay uses a dedicated OCulink (SFF-8612) connector to achieve the bandwidth rate of 64Gb/s, which is two times faster than PCIe 3.0 and 10 times faster than SATA standards. This makes it an ideal solution for data-intensive applications such as autonomous driving, mobile automation, real-time forecast, film editing, and military computing.

Removable Drive Tray Design

A typical M.2 SSD is installed on the motherboard or adapter card that is often secured by tiny screws and requires opening the computer case to access the drives. With the ToughArmor MB720MK-B V2, your M.2 NVMe SSDs are brought to the 5.25" optical bay of the computer system and lets you change the drives without open up the case, making drive maintenance a more efficient and straightforward process

Patent-Pending M.2 Drive Locker

To install the drive, simply place the M.2 PCIe NVMe SSD in the drive tray, adjust the M.2 drive locker to the correct drive length, and you are all set to go. No tools or screws are required.

Full Drive Length Support

The M.2 adjustable locker accommodates all standard M.2 PCIe NVMe SSD drives, including 2230 (30mm), 2242 (42mm), 2260 (60mm), 2280 (80mm), and 22110 (110mm), making this drive universal to all M.2 drive length and future-proofing the extra-long M.2 110mm drive.

EMI Grounding Technology

Grounding your M.2 SSD is essential as swapping drives without proper grounding may lead to hardware damages due to static shocks. With our innovative EMI Grounding Technology, once the drive clips in the M.2 adjustable locker, the drive will be in a constant grounded state throughout the tray, housing, and computer system to ensures your drives are protected from static electrical surges and safe during swapping.

ToughArmor Protection

Ensuring the enclosure can be relied upon for many years, the ToughArmor MB720MK-B V2 is capable of holding up in the harshest environment. It comes equipped with rugged, heavy-duty full-metal protection throughout the entire device and tray, making it perfect for industrial devices that may require a flammability rating. The outstanding build quality is suitable for various enterprise systems such as military and law enforcement industries, in-vehicle computers, and manufacturing conditions such as embedded control and factory automation systems.

Maximizing Cooling Performance

Considering M.2 NVMe SSD is notorious for generating high temperatures, the drives must be maintained under operating temperatures at all times to prevent degradation of performance. Each drive tray comes equipped with an extra-large high-efficiency aluminum heatsink lid and thermal pad.


Working together with the dual 40mm cooling fans, the heat is further dispersed through the intelligently place ventilation holes throughout the entire enclosure.


The dual cooling fans come with three fan speed settings: High, Low, and off. The user can manually select the proper cooling option to keep the drives at optimal operating temperatures.

Packed with Features

An LED status light built into the tray lets you know your drive is powered up and in use. The LED will shut off when no drive is installed to save power.


For an additional physical layer of security, the included key-lock can be used to protect against unwanted access and secure drives in rough environments, such as military systems and in-vehicle PCs.


Never forget which drives belong in what bays. With our individual drive ID labels, you'll always know which drive tray belongs in your RAID array or which drives contains specific files. Freely unplug and rearrange them to better suit your configurations or remove them for a simplified look.


The ToughArmor MB720MK-B V2 supports 15-pin SATA power cables with locking latches. You'll never need to worry about cables unintentionally disconnecting from your enclosure. Once these cables are connected, they will lock and stay in place.

Compatible Drive Tray (Caddy)
Key Features
Fits 4x M.2 NVMe SSD of all lengths, 30mm (2230), 42mm (2242), 60mm (2260), 80mm (2280), and 110mm (22110)
Installs into any standard external 5.25" optical drive bay
Uses 4x OCulink (SFF-8612) to connect (NVMe host required)
Supports PCIe 4.0 specification with transfer rates up to 64Gb/s per drive bay
Patent-pending screw-less M.2 adjustable locker holds all length drives securely
Removable and tool-less drive installation design for easy drive maintenance
Ruggedized full-metal enclosure meeting flammability requirements
Integrated large high-efficiency heatsink and ample ventilation for excellent cooling performance
2-segment key lock for additional physical security
The Eagle-hook tray latch securely holds the drive tray inside the enclosure
EMI Grounding – protects SSDs from electrical damage
Industry-leading 3-year warranty against all defects
Complimentary support from professionally trained technical support agents
3 Years Warranty
Model Number :
MB720MK-B V2
Color :
Support Drive Size :
4 x M.2 SSD (2230~22110)
Compatible Drive Type :
NVMe PCIe Gen 4x4
Number of Drives :
Support Drive Length :
30mm – 110mm
Drive Bay :
1 x 5.25” half height bay
Host Interface :
4 x SFF-8612, pin-out defined by SFF-9402 Rev 1.1
(Tri-mode incompatible)
Power Input :
2 x 15pin SATA power connector
Transfer Rate :
Up to 64Gbps (Depending on SSD Speed)
Support SSD Capacity :
No Limitation
Drive Cooling (Active) :
2 x 40*40*20mm Fan
Structure / Material :
Full Metal
Drive Security :
2 segment key lock
Support Hot-Plug :
Yes (host must support hot-plug function)
Dimension (W x H x D) :
146.0 x 41.3 x 182.0mm
Product Net Weight :
Package Gross Weight :
Drive Activity LED Indication :
Drive power: solid green; Drive access: flashing green
Package content :
Device, User manual, Drive ID plugs, Screws ,Keys
M.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



Frequent Asked Questions
Q: Can you recommend an add-on card that works with MB720MK-B V2?

A: The following add-on cards are compatible with MB720MK-B V2. We highly recommend using the official cable for the best compatibility.


Brand Add-on Cards / Motherboards Compatible Cables
HighPoint SSD7580 A   Slimline SAS 8-Lane to 2 x OCulink 4-Lane Connector Cable
(SFF-8654 8i to 2 x SFF-8611 4i)
Download pinout diagram

Send us the pinout diagram of the cable you
desire to use for the compatibility check

Known compatible cables:
Serial Cable SLSP-8X-11X2-0.5M
Serial Cable SLSP-8X-11X2-1M
Micro SATA Cables MIC74-8401
Supermicro CBL-SAST-0816
HighPoint 8654-8611-205

Known incompatible cables:
Broadcom 05-60001-00

Note: Websites listed above are not affiliated with ICY DOCK and solely responsible for their products and services.
Supermicro X12SPM-TF
Micro SATA
(M.2 to SlimSAS)
  Slimline SAS 4-Lane to OCulink 4-Lane Connector Cable
(SFF-8654 4i to SFF-8611 4i)
Download pinout diagram

Send us the pinout diagram of the cable you
desire to use for the compatibility check

Known compatible cables:
Micro SATA Cables RML42-0503

Note: Websites listed above are not affiliated with ICY DOCK and solely responsible for their products and services


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: 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:  Can I replace the cooling fan attached to the device? Will doing that void the warranty?

A:The cooling fan we used has been thoroughly tested with the drive enclosure to ensure it functions properly and supports the fan speed control (for select models). Therefore, we suggest our customers keep the original fan for the best result. However, we understand the stock fan may not be suitable for all the applications, so we elected to honor the warranty when 3rd party fan is using. The warranty may void if the 3rd party fan causes electrical damage to the device, though.

Q:  Which specification should I check before buying the 3rd party cooling fan?

A:The following information is the fan specification requirement and compatible fan models for MB720M2K-B V2


Fan Dimension (LxWxH) 40 x 40 x 10mm 40 x 40 x 20mm 
Connector Type 3 Pin Wafer
Rated Voltage (VDC) 12V DC
Rated Current (A) < 0.12A (127mA)
Screw Specification Phillips Flat Head - M3 x 15mm - Steel (Not Included) Phillips Flat Head - M3 x 25mm – Steel (Came with stock fan)


Compatible fan models


(without test, use it at your own risk)


Noctua NF-A4x10 FLX NF-A4x20 FLX    
Sunon MF40101VX-
Sanyo Denki 109P0412H901 109P0412M901 9GA0412P6F001 109P0412H601
109P0412F601 109P0412M601 9WP0412H6001  


Q: I'm having the difficulties closing the lid of the drive tray and unable to insert the drive tray all the way to the drive enclosure after placing the M.2 SSD onto the drive tray.

A: Make sure to lock the M.2 SSD with the adjustable M.2 locker. The tray lid will not close properly if the M.2 locker is not fully secured. If you are having difficulty secure the M.2 locker or close the cover, the M.2 SSD you are using may not follow the standard M.2 SSD thickness, which is less than 1.5mm height for each side with a total height that does not exceed 3.8mm. Using the M.2 SSD with non-standard thickness will cause improper tension on the M.2 locker and tray lid and make the M.2 connector misaligned. If you are having issues inserting the drive tray to the enclosure, please stop the operation immediately and check the drive thickness to ensure it follows the standard M.2 SSD thickness - less than 1.5mm height for each side and less than 3.8mm for total height.

Metal heat dissipation sticker


Note: Some M.2 SSD uses a metal heat dissipation sticker that causes each side's thickness more than the 1.5mm. Remove the sticker will solve the problem, but do it at your own risk (might void the warranty of SSD)


ICY DOCK enclosure is design to be compatible with M.2 SSD that has standard thickness. We highly recommend checking the drive thickness before purchase, and please refer to the incompatible M.2 SSD list below for further information:

M.2 NVMe SSDs known to be incompatible with ICY DOCK enclosure:


M.2 SATA SSDs known to be incompatible with ICY DOCK enclosure:


Please contact if the problem persists so we can resolve the issue as soon as possible.

Click here to report a compatible/incompatible M.2 SSD.

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