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
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Eligible for Return, Refund or Replacement within 30 days of receipt
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Availability:
In Stock.
Arrives
Friday, Dec 12
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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
Hardware Interface: PCIE x 4, Thunderbolt
Brand: UGREEN
Color: Grey
Product Dimensions: 4.72"L x 1.89"W x 0.74"H
Hardware Platform: Linux/Windows/MacOS/Android
Material: Aluminum
Item Weight: 0.2 Kilograms
Memory Storage Capacity: 8 TB
Compatible Devices: Computer, PS4/5, Router, iPad, macbook
Hard Disk Form Factor: 2280 Inches
Max Number of Supported Devices: 1
Data Transfer Rate: 40 Megabytes Per Second
Manufacturer: Ugreen Group Limited
Product Dimensions: 4.72 x 1.89 x 0.75 inches
Item Weight: 7 ounces
Item model number: 15976-40GB
Date First Available: October 26, 2023
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Dec 12
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.
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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.
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Reviewed in the United States on December 28, 2024 by Joseph S. Joseph S.
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.
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Reviewed in the United States on October 18, 2024 by L-Ram L-Ram
I have had this thing for about 9 months and its been such an inconsistent experience. When it runs it runs so well and so so fast but the housing is not built for the speed. It overheats and shuts off and im very afraid of it corrupting my files because of this. Is there a fix? Do I have a faulty enclosure? Idk but I plan to return this immediately
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Reviewed in the United States on November 10, 2024 by NG
I’m quite impressed. The materials are top-notch, and it feels incredibly premium in your hand—definitely not one of those flimsy enclosures you’d worry about breaking after a few uses. For day-to-day usage, it works flawlessly. That said, I did encounter a downside: the cooling performance. If you’re transferring large amounts of data in one go, the enclosure struggles to dissipate the heat generated by the SSD. While this is likely an edge-case scenario for most users, it’s worth noting if your workflow involves heavy read/write operations. For regular use, this enclosure is a fantastic choice. But if you frequently deal with large data transfers, you might want to explore other options with better cooling capabilities.
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Reviewed in the United States on January 2, 2025 by Dana Cunningham
This enclosure is pretty nice. The fan actually moves some air which one of the main reasons I purchased it. I put a Crucial P310 in it, which aspirationally can hit 7100 MBps reads. In this enclosure I saw closer to one of the images of 3000-3500 MBps reads and 2000-2600 MBps writes. Installation was simple and the tiny screw driver needed to open it and secure the SSD was included. Performance was acceptable on both Windows 11 and Mac with windows being slightly faster. The device came with a high speed USB-C to USB-C cable that was able to hit those speeds. It performed just as well as my TB4 cables. It also came with a USB-C to USB-A cable that I did not test. With this and the SSD used for testing being Prime Day purchases and heavily discounted I am happy with the cost as well.
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Reviewed in the United States on July 16, 2025 by Nicholas C Lederer