Buy Now, Pay Later
As low as
$18.33
/ mo
Learn more
- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Free shipping on this product
30-day returns
Learn more
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Monday, Oct 19
Recently Viewed
Features
- Intelligent Cooling, Peace of Mind in Use: This M.2 SSD Enclosure is equipped with a PWM turbo high-speed fan, which can precisely control the fan speed and automatically adjust it to maintain normal temperatures. This not only protects the hard drive but also extends its lifespan. Additionally, the fan operates at a relatively low noise level, providing you with a comfortable user experience
- Lightning Fast Transfers, Enjoy Efficient Living: With the built-in ASM2464PD chip, support for UASP acceleration protocol, and equipped with a USB4-compatible Type-C interface, this 40Gbps M.2 NVME SSD Enclosure is compatible with USB4/3.2/3.1/3.0/2.0 & Thunderbolt 3/4. Note:Thunderbolt 4 speeds require Thunderbolt 4 cables and interfaces. Other interfaces can only reach the highest speed of the corresponding interface
- Widely Compatible, Explore More Possibilities: The 40Gbps Macbook SSD Enclosure is the preferred choice for gamers, video editors, photographers, and office workers. It supports M/B+M key NVMe solid-state drives with a maximum capacity of 4TB. It is compatible with sizes including 2230/2242/2260/2280, and it is suitable for Windows/Mac OS/Linux/Android systems (Note: Does not support SSD with heatsink and M.2 PCIE 5.0 SSD)
- Self-Monitoring, Ensuring Secure and Reliable Backup: The S.M.A.R.T. technology enables timely detection of the hard drive's operational status, while the TRIM command function optimizes the performance of the solid-state drive. The USB4 NVME Enclosure facilitates self-monitoring, ensuring the security and stability of your data transfers. Additionally, the equipped silicone case effectively mitigates the impact on the hard drive enclosure
Description
Why can't my computer recognize my SSD? 1. Verify that the product, hard drive, and computer are properly connected and that the hard drive is correctly installed. 2. A new hard drive must be partitioned and formatted for the first time; otherwise, the computer will not recognize the drive letter. 3. Verify that the system supports large-capacity hard drives. 32-bit Windows XP does not support hard drives larger than 2TB. 4. Verify that the hard drive format matches the system's supported format. If not, format the hard drive to a supported format: Windows supports NTFS/exFAT/FAT32, while Linux and macOS support exFAT. 5. Test by connecting the product to another USB port on the computer. For a desktop computer, connect the product to the USB port on the back of the unit. 6. Replace the product cable and test again. 7. Replace the hard drive and test again.8. Test again by connecting the product and hard drive to another computer. Why does the enclosure heat up during using? The enclosure uses an aluminum alloy shell with a PWM turbo cooling fan to help transfer heat from the hard drive to the outside to prevent the internal temperature from heating up. The maximum operating temperature of the enclosure is below 60°C, which is a safe range. Why does the read and write speed of the enclosure decrease after running for a while? The maximum transfer rate of the enclosure can reach 40Gbps. High-speed transfer makes the hard disk heat up. If the temperature is too high, the controller of the enclosure and SSD may activate thermal throttling protection, automatically reducing the transfer speed to protect the hardware from damage. Why does the enclosure only reach 10Gbps on Mac mini M4/M4 Pro? The front two USB 3 ports on Mac mini M4/M4 Pro only support up to 10Gbps. To achieve 40Gbps, please connect the enclosure to the TB4/USB 4 ports on the back of the Mac mini. 40Gbps M.2 Enclosure 40Gbps M.2 Enclosure 40Gbps M.2 Enclosure 1TB Portable SSD（40Gbps） 80Gbps M.2 Enclosure 40Gbps Dual-Bay Cloner 20Gbps M.2 Enclosure
Hardware Interface: Thunderbolt
Brand: UGREEN
Color: Grey
Product Dimensions: 4.72"L x 1.89"W x 0.74"H
Hardware Platform: Linux/Windows/MacOS/Android
Hardware Interface: Thunderbolt
Hardware Platform: Linux/Windows/MacOS/Android
Memory Storage Capacity: 8 TB
Compatible Devices: Computer, PS4/5, Router, iPad, macbook，Mac Mini
Hard Disk Form Factor: 2280 inches
Supported Devices Quantity: 1
Data Transfer Rate: 80 gigabits_per_second
Connectivity Technology: Thunderbolt
Color: Grey
Enclosure Material: Aluminum
Item Dimensions L x W x H: 4.72"L x 1.89"W x 0.74"H
Item Weight: 0.2 kg
Brand: UGREEN
Number of Items: 1
Item Highlight: Anti-Drop Enclosure for Mac Mini, Support M/B+M Key Size 2280/2260/2242/2230 Compatible with Thunderbolt 3/4/USB4/3.2/3.1
Manufacturer: Ugreen Group Limited
Built-In Media: 40Gbps M.2 NVMe Enclosure with cooling fan*1, External Silicone Case *1, Silicone Thermal Pad *1, USB C to USB A Cable*1, USB C to USB C Cable*1
Model Number: 15976-40GB
Mfr Part Number: 15976
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Oct 19
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- Zip Pay in 4
- Financing through Apple Pay
- Financing through Google Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
I started off with the Acasis Thunderbolt 4 enclosure. I can confirm that the Acasis unit does indeed have a Thunderbolt 4 compatible board, and the UGreen does not. However, my testing didn't show a huge difference in speeds, at least not enough to justify the trade off in thermals. The Acasis unit got VERY hot. The included thermal pad is not thick enough to reach the top aluminum plate, and I assume they do this as the Acasis seems to be geared more towards swapping NVME's regularly, vs the UGreen which seems to be geared toward installing once, and that NVME living in the enclosure long term (tools vs tool-less). The operational temp for most NVME SSD's is technically 30*C-72*C (86*F-161*F). In the Acasis, even at idle, I would clock the enclosure up at 120*F, and the drive with the top plate removed at 123*F. Under a blackmagic stress test, I could easily get the drive up to 155*F and enclosure up to 162*F. While that is within the margin of safety, and the enclosure is obviously dissipating heat as it was hotter than the drive itself, that was just too close to max temps for my comfort and I really think long term that the drive would not live very long. Now on to the UGreen. The design is MUCH better. The fan does do something. It doesn't pass air over the SSD itself, it moves air from under the SSD and over the enclosures main board. The big difference is the UGreen has a solid copper to plate, and the included thermal pad is thick enough that on a standard NVME drive it brings the height up to the height of the rest of the enclosure (you can see it in photo 2) and the NVME makes DIRECT contact with the copper plate. The temperature readings I took were after running blackmagic 5GB stress test for 10 minutes straight. The second photo at 92.3F is of the lower end of the NVME, the 108*F is the upper end. The memory modules themselves were in the 92-95*F area, well within my comfort zone. Overall, I'm much more happy with this unit over the Acasis. I think the Acasis could work if you went and got a thicker thermal pad, but I love the aesthetics of the UGreen, and in my use case, this is a drive that will always live in the enclosure, so having a screw to keep it installed is actually a pro for me. I skipped the included rubber wrap as NVME's aren't going to be damaged by shock or vibration, and I don't care if the enclosure anodizing gets scratched. Blackmagic test results done on a Macbook with thunderbolt 4 capabilities, although it is falling back to USB 3.4 due to the controller in the UGreen not supporting Thunderbolt 4. Still plenty fast for me, and way faster than any off the shelf external SSD offering.
...
show more
Reviewed in the United States on December 28, 2024 by John C.
This little enclosure is really great, probably the best on the market right now. See below a quick summary of Pros and Cons: Pros: - Small. Although I bought it to have it on my desk, I could easily travel with it. - Rock solid performance (see attached image). Best of all, **performance is maintained even when using longer cables**. That is not always the case with other enclosures (e.g. Satechi). I ran tests using the included cable and a 3.3-ft thunderbolt 4 compatible cable. Transfer numbers were basically the same. - Built like a tank. It feels like a solid block of aluminum, even the internals are metallic. - It is provided with an extremely silent fan. It is temperature controlled, so it only kicks in when needed. - Includes a removable silicone sleeve. - Adequate price. Cons: - Included cable, although it works, it's a bit short and feels somewhat cheap. A braided one would've been great. - Since closing the lid requires a short sliding motion, the friction against the thermal pad makes it a bit hard to close. This is really a minor thing. I didn't know Ugreen made this type of devices. I'll keep them in mind next time I'm on the market for a similar product.
...
show more
Reviewed in the United States on October 18, 2024 by L-Ram
Works well*, quiet and small. Only issue on both that I own is the included cables are not compatible with MacBook Pro. It might connect and work for a while, but when I tried to connect both, the cables started failing and they would not connect. Works great with authentic Thunderbolt cables. The cable issue is why I deducted one star. Otherwise, these are great! I took out the audio on the video due to background noise as to not give a false impression of this device’s noise. I can’t hear the fan on this at all.
...
show more
Reviewed in the United States on October 4, 2025 by Adan
Bad firmware prevents the device from working when connected to USB4 on certain AMD motherboards. With USB4 connections, If it works at all with a NVME installed it constantly disconnects/reconnects every 3-5 seconds non-stop making it pretty much useless. With no nvme drive it connects no issues, so this appears to be a firmware problem with the NVME interface. I tried 2 totally different NVME drives exact same problem. Connecting it to a USBA port via the included C to A cable does work, but speeds are limited to 5gbs max. This is apparently a long standing problem as I found posts from the last 3 years that repeatedly bring this up. Not just AMD but also Intel. I have several Ugreen Products and have always really liked their products. However, their support is really not that great here. Their website is all about selling you items and their support area is minimal and several downloads the actual documentation in the files, i.e. driver and firmware, were in chinese only. No actual help database or anyway for self-service. If you plan to use this with a desktop AMD or Intel with USB-4 I would NOT purchase it. It may work fine with Thunderbolt exclusively, and/or Macs but USB4 is hit or miss and good chance of wasting money and time.
...
show more
Reviewed in the United States on September 24, 2026 by Ashley L.
I really like this SSD enclosure. It’s quite fast, the cooling fan is silent, and it feels solid and reliable. The price-to-performance ratio is excellent. It comes with cables of an optimal length and also includes a special rubber protective case. I installed an SSD with a 2TB storage capacity inside, and I think it should also support up to 8TB, although I haven’t tested that myself.
...
show more
Reviewed in the United States on January 11, 2026 by Roman
Included USBCtoC cable is questionable; get a quality 40 Gbps rated USB4 cable to reach full speed. Enclosure itself is fine! Rated 3 stars only for entirely avoidable issue with included cable that negates the main reason you would buy this over a much cheaper but slower SSD enclosure. For the price, a quality USB4.0/TB4 Cable should REALLY be included considering this is a USB4/TB4 enclosure. Long Version: I purchased this enclosure specifically to house a mid range SSD* over USB4 and encountered issues immediately upon use. Using the included USB CtoC cable, the drive would detect then disconnect constantly. I found that this seemed to depend on the orientation of the plugs AND which side was plugged into the PC or enclosure. After finding an orientation and direction that stayed connected, benchmarks returned subpar read speeds around 2200 MB/s with an SSD that scores closer to 4000 MB/s when installed directly on the same motherboard. Windows would also suggest trying a different USB port ***despite the USB port in question being the only USB4 port on my board***. I then swapped to a different cable explicitly rated and sold as USB4 40Gbs capable using that same port. Lo and behold, every issue I mentioned vanished and I started getting benchmark results around 3450 MB/s. Plan on buying a quality USB4/TB4 cable if you intend to use this enclosure at maximum bandwidth! With all that out of the way good news is that the enclosure itself is great! -USB4 40 Gbps baby! This is fast enough to keep up with the majority of consumer SSDs on the market, aside from bleeding edge gen4 or gen5 drives. Even then, you'd probably only notice on large sequential transfers. -Relatively small: This is one of the smallest, actively cooled USB4 enclosures I was able to find at time of writing. -Runs cool, relatively quiet: Enclosure's fan kept drive around 50C during testing and is not audible over the sound of my PC at idle. -Durable: The enclosure is made of decently thick alloy and has a removable silicone sleeve included. I have complete faith that it would easily absorb chest or shoulder height drops without denting while the sleeve will blunt the shock enough to prevent internal damage. Additional Technical Notes: Benchmark results are CrystalMark's SEQ1M read test at default 5x1GiB settings SSD used: PNY CS2241 4TB, M.2 NVME Motherboard/USB Controller: Gigabyte Aorus 870i, with "ASMedia USB4® controller" per mfg's website USB controller is just using Microsoft drivers, as Gigabyte does not have any updated drivers for the USB4 controller listed at time of writing. OS Info: Windows 11 Pro 10.0.26200 Build 26200 [The more you know~~★] Data capable USB C cables have logic controllers inside of their plugs that normally allow USB C cables to work regardless of orientation/direction. This is also the reason why newer USB standards require new cables. I highly suspect the issues I encountered are because the included cables have inadequate or buggy logic. Make sure to buy a cable that is rated at 40Gbps or more to make full use of this enclosure's speed. I suspect the included ones are the same ones Ugreen includes with their older (non USB4/TB4) enclosures. Screenshot of full benchmark results with a good cable attached, courtesy of Aoi-chan.
...
show more
Reviewed in the United States on October 30, 2025 by hatarakiman
This compact NVMe enclosure is a great option for those looking for a reliable and efficient storage solution. It’s designed to fit in small spaces and is compatible with Mac mini computers. The installation process is straightforward and hassle-free, and the enclosure comes with a protective rubberized cover that makes it easy to transport. One downside of this enclosure is that it can get quite warm under heavy workloads, which triggers the fan to kick in and cool it down. The fan noise is relatively low and automatically switches off when the temperature drops below a certain threshold. The cable that comes with the enclosure is quite short and stiff, so if you need to place the drive in a specific location, you’ll need to purchase a different cable. Despite these minor issues, the drive has been working flawlessly so far. I’ve been using it with my Mac mini for several days without any problems, and I don't usually turn off the Mac at nigh. This is a great alternative to expensive Mac storage options, and it offers a reliable and efficient way to store your data.
...
show more
Reviewed in the United States on December 2, 2024 by Kit
This review is for UGREEN 40Gbps M.2 NVMe Enclosure with Cooling Fan, Anti-Drop SSD Enclosure for MacBook, Aluminum M.2 Enclosure Support M/B+M Key Size 2280/2260/2242/2230 Compatible with Thunderbolt 3/4/USB4/3.2/3.1 (ASIN B0CLV3D3H6). I purchased this because I was looking for a better external NVMe enclosure than the one I had been using for years. I not only wanted one that was a faster but one that also provided better cooling. After extensive research and review reading of all available models, this one appeared to be the best one. This unit has some pros, but it also has some serious cons. I'm going to start with the cons, since they are the reason that I am returning this NVMe enclosure. The first and biggest con is the design of closing the cover. This enclosure comes with a thermal pad to install between the top of the NVMe drive and the underside of the cover. You need this thermal pad to help transfer heat from the NVMe to the enclosure to dissipate heat. The problem is that the door slides on. Thermal pads are sticky like glue. This makes it near impossible to slide the cover on. I had to fiddle with it multiple times to finally get it to close, but it still means that the thermal pad is applying horizontal force to the chips on the NVMe. This issue alone with the poor cover design is why I am returning this drive. The next con is that it does not seem like fan works or turns on. I never hear it on, and I never feel any air flow through the vents. I don't like the single mini screw they use for securing the cover. They include a mini screwdriver, but it means that normal screw drivers you find everywhere will work. A toolless design or a mor standard size screw would have been preferred. The screen for securing the NVMe is also not standard. It is not a standard two-piece NVMe screw design like you see on motherboards. It is a one-piece screw with a notch. You have to stick it on to the NVMe, and then lower it down to the screw hole. Now on to the pros. This NVMe enclosure is super fast. It is a lot faster than my prior Sabrent USB-C 3.1 enclosure. This UGREEN enclosure runs a lot cooler, but I don't know if that is because the cooling properties are doing a great job or if it means that it is not extracting enough heat from the NVMe drive. My smaller Sabrent passive cooling drive gets extremely hot. I like that this UGREEN case has decent amount of surface material to dissipate heat, a grooved cover to aid in in cooling, a fan, and a rubber bumper case. This enclosure also uses an excellent ASM2464PD chip. In summary, UGREEN was so close to hitting this one out of the park, but the cover design is deal breaker. The fix is easy. The cover just needs to go straight on without sliding and use four screws to secure it, or better yet a toolless design. Hopefully the fan works, but I am big time in favor of having a fan. Also, I hate when companies throw around the word Thunderbolt for non-Thunderbolt products, and many companies are guilty of this. This device is USB 40 Gbps. It is not Thunderbolt. If UGREEN comes out with an updated model to this that fixes the cover design, I would absolutely buy that. However, having a cover design that is near impossible to close and cause physical stress on the NVMe is not acceptable. It is for this cover design that I have to rate it just 2 out of 5 stars, otherwise it would have been 4 or maybe even 5 stars.
...
show more
Reviewed in the United States on August 2, 2025 by MADPWR