• All-Flash, Ultra Big Storage Capacity
  • Built-in 120W PSU
  • Support USB Power Delivery 15W Charging
  • High Efficiency Ultra Quiet Temp Dissipation Framework

All-Flash, Ultra Big Storage Capacity

Netstor NA622TB3 storage is created to support up to four M.2 PCIe NVMe SSDs. With the present-day largest single M.2 NVMe SSD of 2TB in the market, the maximum storage reaches up to 8TB capacity totally by way of four M.2 NVMe SSDs installed inside.

World’s First Thunderbolt 3 External M.2 SSD Storage with Built-in PCIe Switch

The Thunderbolt™ 3 NA622TB3 has been considerately designed to be integrated with a high performance PCIe Gen3 switch, permitting each M.2 SSD slot within the NVMe storage to get the best achievement the professional wants.

Each M.2 SSD socket within the Netstor unit is guaranteed to have PCIe 3.0 x2 bandwidth of up to 1600 MB/s, which is precisely the doubled performance ensuring that each individual M.2 SSD capacity volume and each RAID group of dual M.2 SSDs can get the best and optimum throughput and accomplishment.

The Convenient Front M.2 SSD LED Indicators

The Netstor team has thoughtfully designed the enclosure front individual M.2 SSD LED indicators for each M.2 NVMe SSD installed inside the NA622TB3, so the users can easily and conveniently understand the status of each M.2 NVMe SSD within the Netstor unit at any time.

Thunderbolt 3 High-Bandwidth up to 40 Gbps

All the modern Mac and Windows PC laptops/all-in-one have equipped with the up-to-date lightning-fast Thunderbolt™ 3 (40Gbps) interface, and accordingly the Netstor Thunderbolt 3 four-slot M.2 NVMe SSD storage is specifically suited to all the present-day Mac/Windows PC laptop host computers in support of the professional editing workflows.

The Blazing-Fast Data Rates up to 2750 MB/s

Designed light and portable four-slot M.2 NVMe SSD storage with support of delivering extraordinary, optimized performance and achievement, the Netstor unit features Thunderbolt™ 3 interface capable of providing data transfer rates up to 2750 MB/s, two times the previous generation of Thunderbolt 2, in favor of all sorts of data storage, supporting both macOS and Windows PC platforms.

The Built-in 120W PSU

The NA622TB3 features the abundant and reliable built-in 120W power supply unit. Even if the prospective, high power required four M.2 PCIe NVMe 22110 or 2280 SSDs are installed within the Netstor unit for working, all the solid-state drives are ensured to have the most stable, sufficient power for production.

Support USB Power Delivery 15W Charging

The M.2 NVMe SSD storage’s Thunderbolt™ 3 ports have incorporated USB power delivery (USB PD) 15W charging, allowing the NA622TB3 to power and charge the upstream Thunderbolt™ 3 laptop and the downstream device via the Thunderbolt 3 cable.

High Efficiency Ultra Quiet Temp Dissipation Framework

The NA622TB3 storage features the three-level variable-speed fan cooling system. In addition to the superior airflow dissipation framework of the Netstor unit, users can also select the most suitable fan speed according to the production settings in favor of the varied working environments.

All other product names mentioned in the content are trademarks or registered trademarks of their respective companies in the U.S. and other countries.


Why does NA622TB3 need to built-in PCIe Switch? What’s the benefit?

Compared with competitor’s solution such as OWC Express 4M2, each of the M.2 PCIe slots only provides PCIe 3.0 ×1 bandwidth. But for Netstor NA622TB3, because it has a built-in PCIe switch, each of the M.2 PCIe slots is able to provide PCIe 3.0 ×2 bandwidth for doubled performance when reading one single M.2 NVMe SSD.

For example:
new macOS Mojave can only use single disk/SSD as a boot drive, so when you use one of the single NVMe SSDs as bootable drive from macOS, you can get doubled speed from Netstor’s solution.

How to read the temperature of NVMe inside of NA611TB3/NA622TB3 for Mac OS?

If you would like to know the temperature of NVMe inside of NA611TB3/NA622TB3 for Mac OS, the third-party monitor tool such as iStat Menus can be downloaded and be used for monitoring the temperature of the M.2 NVMe SSDs in Netstor NA611TB3/NA622TB3 storage.

mac read the temperature of the nvme ssd by istat menus https://bjango.com/mac/istatmenus/

Can Thunderbolt 3 external M.2 NVMe SSD become a boot disk for the Mac computer?

Yes, the M.2 NVMe SSD in Netstor Thunderbolt 3 NA611TB3 / NA622TB3 storage can be used as the macOS boot disk for the Mac computer. The standard operating procedure for installing macOS on external Thunderbolt 3 M.2 NVMe SSD is as follows:

  1. At macOS’s Disk Utility, format the external Thunderbolt 3 NVMe SSD as APFS format.
  2. Go to macOS’s App Store. Key in macOS in the search bar, and press enter. Then you will see the macOS installer (free of charge) from the App Store. Click on the download button to download the macOS installer at App Store to your Mac computer.
  3. After the downloading finishes, execute the macOS installer, select the SSD (the external Thunderbolt 3 NVMe SSD) as the target installation drive [see the image below], and click on Install button to continue with the macOS installation on the external NVMe SSD.
    mac mojave installed on external m.2 nvme ssd
  4. As the macOS installation on the external NVMe SSD completes, the Mac computer will boot into the macOS on the external Thunderbolt 3 NVMe SSD automatically. At this time, click on the Apple icon at the top left position of the screen, select About This Mac, and then you will see that the Startup Disk for the system now becomes SSD [the external NVMe SSD] meaning that at the present your system is currently booting with the macOS on the external Thunderbolt 3 NVMe SSD for work.
    mac mojave installed on external m.2 nvme ssd

Why may external M.2 NVMe SSD be slower than M.2 NVMe SSD installed within the host computer?

There will be two factors which affect the different performances:
First, spec of M.2 NVMe within computer and spec of Thunderbolt™ 3.
Second, different M.2 NVMe SSDs’ specs.

1 Comparison of internal M.2 PCIe NVMe and Thunderbolt 3 spec.

The spec of internal M.2 NVMe is PCIe 3.0 ×4: 32 Gbps (~3200 MB/s)

Although, for the external Thunderbolt 3 interface, the throughput is 40 Gbps, the bandwidth still includes video signal transmission, so in fact, for the data transmission part, the actual performance is only up to 2750 MB/s.

2 Comparison of different M.2 NVMe SSDs’ spec.

Samsung 960 PRO- read: 3500 MB/s , write: 2100 MB/s

OCZ RD400- read: 2600 MB/s , write: 1550 MB/s

As single OCZ M.2 SSD module has lower performance in spec which is below Thunderbolt 3’s bottleneck, when dual OCZ M.2 SSD modules are set with RAID 0, it will have better performance.

As single Samsung M.2 SSD module has much higher performance in spec which is far above Thunderbolt 3’s bottleneck, when dual Samsung M.2 SSD modules are set with RAID 0, it will result in a reduction to RAID 0’s read/write performance over Thunderbolt 3; both read/write will have the same reduction ratio.

na611tb3 NVMe speed

How to Make Thunderbolt 3 Storages in Double Performance?

When two Netstor Thunderbolt 3 storage units (model: NA611TB3, NA622TB3, and NA762TB3…etc.) are connected to the same Thunderbolt 3 Mac computer/laptop, you can just use the following connection to get the Doubled Capacity and the Doubled Performance for up to 4200 MB/s between storages and the Thunderbolt 3 Mac.

Equipment Requirement:
。 Two units of Thunderbolt 3 storage
。 A Mac computer with 4 ports Thunderbolt 3

* [Note: 4 ports Thunderbolt 3 ports mean there are two Thunderbolt chips used by a computer; each Thunderbolt 3 chip (two ports) can provide bandwidth up to 2750 MB/s]

Scheme One

two na622tb3 connect to macbook pro

the graphic of two na622tb3 connect to macbook pro

Two NA622TB3 present double performance under iMac Thunderbolt 3 ports

Dual NA622TB3 with iMac 2017 27 and Gloway NVMe ssd

* Testing by: NA622TB3 *2, Gloway 2TB NVMe SSD *8, iMac 27”(Mid-2017) *1

Scheme Two

two na762tb3 connect to imac pro

the graphic of two na762tb3 connect to imac pro

Here is the way to verify which Thunderbolt 3 Mac computer/laptop contains two separate TB3 controllers in support of the above doubled performance.

Four TB3 ports MacBook Pro 2018/2019
Mac mini (Late 2018)
iMac Pro (Late 2017)

Can Netstor’s NA622TB3 work with Sabrent M.2?

We can’t guarantee the M.2 SSD in Thunderbolt 3 enclosure can work with macOS if the M.2 SSD is not listed in NA622TB3’s compatibility list chart.

Please go to:


And click on the ‘Compatibility’ tab.

All we know so far is:

On February 6, we have been reported by a user who uses Thunderbolt 3 NA611TB3 installed with Sabrent M.2 SSD to work with macOS, and the user reports that there is an issue for the Sabrent M.2 SSD to work with the macOS operating system.

The issue is not solved yet.