40Gbps M.2 NVMe Enclosure 15976-40GB
#6
UGREEN

UGREEN 40Gbps M.2 NVMe Enclosure 15976-40GB

Rating

Model: 15976-40GB
$75.99(incl. tax)Amazon price as of 2025-09-29
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Product Overview

The UGREEN 40Gbps M.2 NVMe Enclosure is designed for high-speed data transfer and efficient cooling. It supports M/B+M key NVMe SSDs, compatible with Thunderbolt 3/4 and USB4 interfaces. The enclosure features an aluminum alloy casing, silicone thermal pad, and a high-speed cooling fan for optimal heat dissipation. It is suitable for various operating systems and SSD sizes, ensuring secure and reliable data backup.

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Product Specifications

Supported SSD Type
NVMe
Supported SSD Size
2280/2260/2242/2230
Interface
Thunderbolt 4 / USB4
Data Transfer Rate
40Gbps
Material
Aluminum
Cooling Solution
Heatsink & Fan
UASP Support
Yes
Trim Support
Yes
Power Source
USB bus-powered
Dimensions
-mm

Size & Weight

Weight
0.2 Kilograms
Hight
0.74 inches
Width
1.89 inches
Depth
4.72 inches

Features

Tool-Free Installation Function

While the installation is relatively simple, it requires a tiny screwdriver to secure the SSD, so it's not completely tool-free, which might be less convenient for some users, but still manageable.

External Heat Dissipation Function

The external heat dissipation design, incorporating an aluminum shell, thermal pad, and cooling fan, effectively cools the SSD, preventing performance degradation due to thermal throttling and ensuring stable, sustained performance.

Write Protection Function

This enclosure does not have a write protection function, so it is impossible to prevent data from being written to the SSD, which may be a drawback for users needing to protect data from accidental modification.

UASP Support Function

Supporting UASP significantly increases data transfer speeds when connected to a UASP-compatible USB port, speeding up large file transfers and backups, making it more efficient for handling large amounts of data.

LED Indicator Function

There is no mention of an LED indicator function in the product information, so it's assumed that this enclosure does not have one, which might make it harder to troubleshoot connection issues.

Multiple Size Support Function

Supporting multiple M.2 SSD sizes (2230, 2242, 2260, 2280) provides flexibility when upgrading or repurposing existing SSDs, making it a versatile choice for various storage needs.

SHOPSTAFF Rating Score

#6
Ranked #6 out of 66 products in Category
4.5
Overall Rating

The UGREEN enclosure offers fast transfer speeds and effective cooling, but some users have reported disconnection issues during large file transfers. It's a solid choice for most users.

Supported SSD Type and Size
5.0
This enclosure supports NVMe SSDs and is compatible with multiple sizes including 2230, 2242, 2260, and 2280, providing great flexibility for different storage needs and ensuring compatibility with high-speed drives.
Interface and Transfer Speed
5.0
The Thunderbolt 4/USB4 interface enables ultra-fast 40Gbps transfer speeds, maximizing the potential of NVMe SSDs for rapid data access and transfers, making it suitable for demanding applications.
Cooling Solution
4.5
The combination of an aluminum alloy casing, a silicone thermal pad, and a high-speed cooling fan effectively dissipates heat, preventing thermal throttling and maintaining consistent performance during prolonged use, though some users report heat issues.
Build Quality and Material
4.5
The aluminum construction provides excellent durability and heat dissipation, ensuring the enclosure can withstand daily use and protect the valuable SSD inside, offering a premium feel and robust protection.
Portability and Size
4.3
Its compact size makes it relatively easy to carry, balancing portability with effective cooling capabilities, making it suitable for both desktop and on-the-go use, though not the smallest option available.
Ease of Installation
4.0
Installation is straightforward, but it requires a tiny screwdriver to open the enclosure and secure the SSD, which may be less convenient than completely tool-free designs, but still relatively simple.
Manufacturer Reliability and Warranty
4.3
UGREEN is a reputable brand known for producing reliable accessories, and this enclosure comes with a warranty, providing some peace of mind for users, though not as established as some top-tier brands.
Cost Performance
4.0
Priced at $75.99, it offers excellent performance and features for the price, making it a worthwhile investment for those needing high-speed storage, though slightly more expensive than some alternatives.

Brand & Manufacturer Details

UGREEN
UGREEN specializes in providing high-quality electronic accessories and digital solutions for global consumers.

Key Highlights

  • High-speed data transfer
  • Effective cooling system
  • Broad compatibility
  • Durable aluminum construction

Considerations

  • Ensure proper connection to Thunderbolt 4/USB4 ports for optimal speeds.
  • Monitor temperature during extended use.
  • Be aware of potential disconnection issues during large file transfers.

Recommended For

  • Gamers
  • Video editors
  • Photographers
  • Users needing fast external storage
  • Professionals handling large files

Not Recommended For

  • Users requiring guaranteed stable connections for critical data transfers
  • none in particular

Suitable For

  • High-speed data backups
  • External storage for gaming
  • Video editing on the go
  • Fast transfer of large files

Not Suitable For

  • Long, uninterrupted data transfers where stability is paramount
  • none in particular

Frequently Asked Questions (FAQ)

Q.I'm concerned about the enclosure overheating during large file transfers. Does the cooling system really work?
A.The UGREEN enclosure features a triple heat dissipation mechanism: an aluminum alloy casing, a silicone thermal pad, and a high-speed cooling fan. Staff confirmation indicates the fan effectively moves air to dissipate heat, although one staff member noted the cooling may struggle with sustained, heavy data transfers. Another staff member doing direct comparison to Acasis enclosure found the UGREEN to have better design and thermals.
Q.Will this enclosure work with my Mac Mini M4/M4 Pro at full speed?
A.To achieve 40Gbps speeds on a Mac Mini M4/M4 Pro, you need to connect the enclosure to the Thunderbolt 4/USB 4 ports on the back of the device. The front USB 3 ports on these models only support up to 10Gbps.
Q.I've heard some enclosures randomly disconnect. Is this a common problem with this UGREEN model?
A.Some staff confirmation mentions random disconnections during long file transfers, potentially when connected at 40Gbps. However, this issue doesn't seem to be universally experienced, and could be related to specific hardware configurations or cable quality. One staff was able to resolve the issue by using a cable that connected at 20Gbps.
Q.Is the fan noisy?
A.The enclosure is equipped with a PWM turbo high-speed fan, and staff confirmation indicates that the fan is audible, but not obnoxiously so.
Q.Will this work with my M.2 PCIe 5.0 SSD?
A.According to the product description, this enclosure does not support M.2 PCIe 5.0 SSDs.
Q.I'm not sure how to install my SSD. Is it complicated?
A.Staff confirmation states that installation is simple, and the necessary screwdriver is included. The product description also includes an installation guide.

SHOPSTAFF Rating Ranking

#1

FREEGENE

40Gbps M.2 NVMe SSD Enclosure TBU405 PRO

$91.19(incl. tax)Amazon price as of 2025-09-27

40Gbps M.2 NVMe SSD enclosure with cooling fan, compatible with Thunderbolt 4/3 and USB4/3.2/3.0/2.0.

Supported SSD TypeNVMeSupported SSD Size2280/2260/2242/2230
InterfaceThunderboltData Transfer Rate4.25 Gbps
MaterialAluminumCooling SolutionCooling Fan
UASP Support-Trim Support-
Power Source-Dimensions- mm
Tool-Free Installation FunctionExternal Heat Dissipation FunctionWrite Protection FunctionUASP Support FunctionLED Indicator FunctionMultiple Size Support Function
4.7Overall Rating
5.0Supported SSD Type and Size
5.0Interface and Transfer Speed
4.9Cooling Solution
4.7Build Quality and Material
4.5Portability and Size
4.9Ease of Installation
4.5Manufacturer Reliability and Warranty
4.2Cost Performance
#2

FREEGENE

40Gbps M.2 NVMe SSD Enclosure TBU405 Air

$53.99(incl. tax)Amazon price as of 2025-09-27

40Gbps M.2 NVMe SSD enclosure compatible with Thunderbolt 4/3 USB4, tool-free installation, supports 2280/2260/2242/2230 SSD.

Supported SSD TypeNVMeSupported SSD Size2280/2260/2242/2230
InterfaceThunderbolt 4 / USB4Data Transfer Rate40 Gbps
MaterialAluminumCooling SolutionHeatsink
UASP SupportYesTrim SupportYes
Power SourceUSB bus-poweredDimensions - mm
Tool-Free Installation FunctionExternal Heat Dissipation FunctionWrite Protection FunctionUASP Support FunctionLED Indicator FunctionMultiple Size Support Function
4.6Overall Rating
5.0Supported SSD Type and Size
5.0Interface and Transfer Speed
4.5Cooling Solution
4.5Build Quality and Material
4.5Portability and Size
5.0Ease of Installation
4.0Manufacturer Reliability and Warranty
4.0Cost Performance
#3

FREEGENE

40Gbps M.2 NVMe SSD Enclosure TBU405

$75.99(incl. tax)Amazon price as of 2025-09-27

40Gbps M.2 NVMe SSD enclosure compatible with Thunderbolt 4/3 and USB, supporting multiple SSD sizes.

Supported SSD TypeNVMeSupported SSD Size2280/2260/2242/2230
InterfaceThunderbolt 4 / USB4Data Transfer Rate40 Gbps
MaterialAluminumCooling Solution-
UASP SupportYesTrim Support-
Power SourceUSB bus-poweredDimensions- mm
Tool-Free Installation FunctionExternal Heat Dissipation FunctionWrite Protection FunctionUASP Support FunctionLED Indicator FunctionMultiple Size Support Function
4.5Overall Rating
5.0Supported SSD Type and Size
5.0Interface and Transfer Speed
4.0Cooling Solution
4.5Build Quality and Material
4.5Portability and Size
4.9Ease of Installation
4.0Manufacturer Reliability and Warranty
4.0Cost Performance
#4

ASUS

ROG STRIX Arion ESD-S1C

$59.99(incl. tax)Amazon price as of 2025-09-27

Aluminum alloy M.2 NVMe SSD enclosure with USB 3.2 Gen 2 Type-C for up to 10 Gbps transfer speeds.

Supported SSD TypeNVMeSupported SSD Size2280/2260/2242/2230
InterfaceUSB 3.2 Gen 2Data Transfer Rate10 Gbps
MaterialAluminum AlloyCooling SolutionThermal Pads
UASP SupportYesTrim Support-
Power SourceUSB bus-poweredDimensions7.1 x 3.8 x 1.6 inches mm
Tool-Free Installation FunctionExternal Heat Dissipation FunctionWrite Protection FunctionUASP Support FunctionLED Indicator FunctionMultiple Size Support Function
4.5Overall Rating
5.0Supported SSD Type and Size
3.5Interface and Transfer Speed
4.5Cooling Solution
4.7Build Quality and Material
4.5Portability and Size
4.8Ease of Installation
4.5Manufacturer Reliability and Warranty
4.3Cost Performance
#5

WAVLINK

40Gbps PCIe NVMe SSD Enclosure U41F

$65.99(incl. tax)Amazon price as of 2025-09-27

40Gbps USB4 NVMe PCIe SSD Enclosure with aluminum alloy body, dual-sided perforated design, and built-in fan.

Supported SSD TypeNVMeSupported SSD Size2280
InterfaceUSB4Data Transfer Rate40 Gbps
MaterialAluminumCooling SolutionHeatsink & Fan
UASP SupportYesTrim SupportYes
Power SourceUSB bus-poweredDimensions119.38 x 50.8 x 17.78 mm
Tool-Free Installation FunctionExternal Heat Dissipation FunctionWrite Protection FunctionUASP Support FunctionLED Indicator FunctionMultiple Size Support Function
4.5Overall Rating
3.5Supported SSD Type and Size
5.0Interface and Transfer Speed
4.8Cooling Solution
4.7Build Quality and Material
4.5Portability and Size
4.9Ease of Installation
4.0Manufacturer Reliability and Warranty
4.3Cost Performance