40Gbps M.2 NVMe SSD Enclosure TBU405 Air
#2
FREEGENE

ACASIS 40Gbps M.2 NVMe SSD Enclosure TBU405 Air

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Model: TBU405 Air
$53.99(incl. tax)Amazon price as of 2025-09-29
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Product Overview

The ACASIS TBU405 Air is a 40Gbps M.2 NVMe SSD enclosure designed for Thunderbolt 4/3 and USB4 users. It supports M-Key interface B+M 2280/2260/2242/2230 SSD sizes and offers tool-free installation. This enclosure provides lightning-fast transfers, transferring large files in seconds. It is controlled by the DSL6340 chip for stable performance and better heat dissipation. Compatible with Windows, macOS, and Linux, it supports hot-swapping and large capacity expansion up to 8TB.

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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
UASP Support
Yes
Trim Support
Yes
Power Source
USB bus-powered
Dimensions
-mm

Size & Weight

Weight
8.8 ounces
Hight
1.46 inches
Width
4.02 inches
Depth
5.67 inches

Features

Tool-Free Installation Function

The tool-free installation simplifies the process of installing or replacing an SSD, saving time and effort. The design allows for quick and easy access to the SSD without needing any screwdrivers or specialized tools, making it very convenient for users.

External Heat Dissipation Function

The external heat dissipation design, featuring an aluminum enclosure with heat-sink grooves, effectively cools the SSD, preventing performance degradation due to thermal throttling and ensuring stable, sustained performance during demanding tasks like video editing or large file transfers.

Write Protection Function

This enclosure does not have a write protection function, meaning there is no built-in mechanism to prevent data from being written to the SSD. This could be a drawback for users who need to ensure data integrity or prevent accidental overwriting of sensitive information.

UASP Support Function

Supporting UASP (USB Attached SCSI Protocol) significantly increases data transfer speeds when connected to a UASP-compatible USB port. This speeds up large file transfers and backups, reducing waiting times and improving overall efficiency for users with compatible systems.

LED Indicator Function

The LED indicator provides a quick visual confirmation of the enclosure's operating status, making it easy to troubleshoot connection issues or confirm data transfer activity. This simple feature can save time and effort by providing immediate feedback on the enclosure's functionality.

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. This allows users to use various sized SSDs with a single enclosure, increasing its long-term usability and value.

SHOPSTAFF Rating Score

#2
Ranked #2 out of 66 products in Category
4.6
Overall Rating

The ACASIS TBU405 Air is a fast and easy-to-use NVMe enclosure, but its Thunderbolt/USB4 only compatibility limits its versatility. It offers good performance for the price.

Supported SSD Type and Size
5.0
This enclosure supports NVMe SSDs and multiple sizes including 2280, 2260, 2242, and 2230, providing great flexibility for different storage needs. This ensures compatibility with a wide range of high-speed NVMe drives, making it a versatile choice for various applications.
Interface and Transfer Speed
5.0
The Thunderbolt 4/USB4 interface provides ultra-fast 40Gbps transfer speeds, maximizing the potential of NVMe SSDs. This results in rapid data access and transfers, significantly reducing the time required for large file operations and demanding applications.
Cooling Solution
4.5
The enclosure uses a heatsink for cooling, which helps dissipate heat and prevent thermal throttling. While effective for moderate workloads, sustained heavy use might benefit from active cooling solutions like a fan for optimal performance.
Build Quality and Material
4.5
The aluminum construction provides good durability and heat dissipation, ensuring the enclosure can withstand daily use and protect the SSD inside. The sleek and minimalistic design with cleanly milled heat-sink grooves also enhances its aesthetic appeal.
Portability and Size
4.5
Its compact size makes it relatively easy to carry, making it suitable for both desktop and mobile use. It strikes a good balance between portability and functionality, allowing for convenient storage expansion on the go.
Ease of Installation
5.0
The tool-free design simplifies the installation process, allowing users to quickly and easily install or swap SSDs without needing any tools. This user-friendly design saves time and minimizes the risk of damaging the SSD or the enclosure.
Manufacturer Reliability and Warranty
4.0
ACASIS is a known manufacturer, and this enclosure comes with a 2-year warranty, providing some peace of mind for users. However, some user reviews mention potential quality control issues, so it's important to consider this when making a purchase.
Cost Performance
4.0
Priced at $53.99, it offers excellent performance and features for its price range. While not the cheapest option, the fast transfer speeds and tool-free installation make it a worthwhile investment for those needing high-speed storage.

Brand & Manufacturer Details

ACASIS
ACASIS develop and market a wide range of computer accessories & peripherals, including SSD Enclosues, USB Hubs, USB Docking Station, Capture Card and more.

Key Highlights

  • Fast transfer speeds
  • Tool-free installation
  • Good heat dissipation

Considerations

  • Only compatible with Thunderbolt 4/3 and USB4 ports
  • May get warm during sustained transfers
  • Check SSD compatibility before purchase

Recommended For

  • Video editors
  • Photographers
  • Gamers
  • Users with Thunderbolt 4/3 or USB4 ports

Not Recommended For

  • Users with only USB 3.2 or older ports
  • Users needing write protection
  • Users on a very strict budget

Suitable For

  • High-speed data transfer
  • Video editing
  • Gaming
  • External storage for demanding applications

Not Suitable For

  • Archiving infrequently accessed data
  • Connecting to older USB ports
  • Environments requiring complete silence

Frequently Asked Questions (FAQ)

Q.I'm working with large video files and need fast transfer speeds. Will this enclosure significantly improve my workflow?
A.Based on staff confirmation, users have experienced significantly improved speeds, especially when paired with a compatible high-speed SSD like the Samsung 990 Pro. One user reported scrubbing through 4K, 120fps footage without any issues, and file transfers that previously took 10-20 minutes now take only 1-2 minutes. Please note that the actual speed depends on your specific system and SSD.
Q.I have a Mac Studio. Will this enclosure work with it, and is it easy to install?
A.Yes, staff confirmation indicates full compatibility with Mac Studio running the latest macOS. Installation is designed to be tool-free; simply open the aluminum case, insert the SSD and rubber mounting plug, and push the SSD into the enclosure. No screws or screwdrivers are needed, and your Mac should recognize the drive immediately.
Q.I'm using a USB-C m.2 enclosure currently, but it's not fast enough. Will upgrading to this Thunderbolt enclosure make a difference?
A.Yes, according to staff confirmation, upgrading to this Thunderbolt enclosure can make a significant difference, particularly if you're experiencing slow data transfer rates with USB-C. One user noted that they were stunned by the performance improvement when editing videos, with previously painful video scrubbing and playback becoming seamless.
Q.Does this enclosure get very hot during sustained use? Should I be concerned about heat management?
A.Some staff confirmation mentions that the enclosure can get quite warm with sustained reads or writes, and even during indexing on macOS. If you plan to use it for backups or occasional transfers, it should be fine. However, for constant access or sustained workloads, an actively cooled enclosure with a fan may be a better option to manage heat.
Q.I'm planning to use this with my new M4 Macbook Air. Will it be compatible?
A.While the product description states compatibility with macOS, one staff confirmation reported issues with a new M4 Macbook Air, where the unit was not recognized despite testing the NVMe SSD on a PC. It's possible they received a defective unit, so it might be wise to ensure you can return the product if you encounter similar problems.
Q.I have a Crucial P3 Plus SSD. Is it compatible with this enclosure?
A.According to staff confirmation, a Crucial P3 Plus SSD is reported as NOT working with this enclosure. It's recommended to use a compatible SSD, such as a Samsung 980 or 990 Pro, for optimal performance.
Q.Is this enclosure backwards compatible with USB 3.2/3.1/3.0/2.0?
A.No, the product overview clearly states that the TBU405 Air enclosure is specifically designed for Thunderbolt 4/3 and USB4 and is NOT backwards compatible with USB 3.2/3.1/3.0/2.0.
Q.I'm experiencing disconnects during sleep mode on my Mac Studio. Is this a common issue?
A.One staff confirmation reported that the drive disconnects during sleep mode on their Mac Studio, requiring a physical unplug and plug to remount it. They suspect this is a macOS-related issue. Keep this in mind if you frequently use sleep mode on your Mac.

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