---
product_id: 466036904
title: "40Gbps M.2 NVMe SSD Enclosure,Tool Free Installation NVMe ssd Enclosure for M1/M2/ Pro/Air Compatible with thunderbolt3/4/5/USB4/3.2/3.1/3.0/2.0, Support 2280/2260/2242/2230B+M M-Key (TBU401)"
brand: "acasis"
price: "¥25447"
currency: JPY
in_stock: true
reviews_count: 7
category: "Acasis"
url: https://www.desertcart.jp/products/466036904-40gbps-m-2-nvme-ssd-enclosure-tool-free-installation-nvme
store_origin: JP
region: Japan
---

# 40Gbps blazing transfer speed Fanless aluminum heat dissipation Tool-free 5-second installation 40Gbps M.2 NVMe SSD Enclosure,Tool Free Installation NVMe ssd Enclosure for M1/M2/ Pro/Air Compatible with thunderbolt3/4/5/USB4/3.2/3.1/3.0/2.0, Support 2280/2260/2242/2230B+M M-Key (TBU401)

**Brand:** acasis
**Price:** ¥25447
**Availability:** ✅ In Stock

## Summary

> ⚡ Unlock Lightning-Fast Storage, No Tools Needed!

## Quick Answers

- **What is this?** 40Gbps M.2 NVMe SSD Enclosure,Tool Free Installation NVMe ssd Enclosure for M1/M2/ Pro/Air Compatible with thunderbolt3/4/5/USB4/3.2/3.1/3.0/2.0, Support 2280/2260/2242/2230B+M M-Key (TBU401) by acasis
- **How much does it cost?** ¥25447 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/466036904-40gbps-m-2-nvme-ssd-enclosure-tool-free-installation-nvme)

## Best For

- acasis enthusiasts

## Why This Product

- Trusted acasis brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rugged Fanless Design:** Premium aluminum casing with silicone thermal paste ensures silent, efficient heat dissipation—stay cool without noisy fans.
- • **Compact & Travel-Ready:** Slim, lightweight, and bundled with a certified Thunderbolt 4 cable—ideal for remote work, creative pros, and digital nomads.
- • **Blazing 40Gbps USB4 Speeds:** Experience near-internal SSD speeds with Thunderbolt 4 and USB4 compatibility, maxing out at 2800MB/s read/write.
- • **Effortless Tool-Free Setup:** Pop open, slide in your NVMe SSD, and go—no screws, no hassle, perfect for busy pros on the move.
- • **Universal NVMe Compatibility:** Supports M/B+M key SSDs from 2230 to 2280 sizes, up to a massive 8TB capacity, across Windows, Mac, Linux, and Android.

## Overview

The ACASIS 40Gbps M.2 NVMe SSD Enclosure delivers ultra-high-speed external storage with dual JHL7440 + RTL9210 chips, supporting USB4 and backward compatibility. Its tool-free design and rugged aluminum build with thermal paste enable quick installation and efficient heat management without fans. Compatible with a wide range of NVMe SSD sizes up to 8TB, it’s perfect for professionals demanding fast, reliable, and portable storage solutions.

## Description

desertcart.com: ACASIS 40Gbps M.2 NVMe SSD Enclosure, Tool Free Installation, NVMe Enclosure for M1/M2/ Pro/Max,Compatible with USB4/3.2/3.1/3.0/2.0, Support 2280/2260/2242/2230 B+M M-Key (TBU401) : Electronics

Review: Zoom - When I originally received this enclosure it was missing the heat pad and the usb-c cable that was included was short and only capable of usb 2 speed so when I wrote my original review I complained about the low data speed (30MB/s) and the missing heat pads and only gave the product 3 stars. The enclosure was fine, the accessories were bad or missing. After a long email correspondence with Acacias Customer Support, which included pictures of what I received, they told me that the cable I got was not their cable and so I thought I might have received a device that had been shipped to someone else and returned without the heat pad and with a useless usb cable, and I ordered a replacement. The Acacias product package was not sealed so it was not possible to tell if it already had been opened. The replacement just came in and when I opened the package (it was also not sealed) it contained a proper Thunderbolt 4 cable and the heat pad, and when I tested it I received the kind of speeds I expected - about 2800 MB/s using the WD 1 TB 2280 memory. That makes it clear that I received the bad usb cable due to my original order having been returned to desertcart by another customer and not due to the fault of the vendor, so I have revised my review. This enclosure works very well, although it does get very warm and probably needs a cooling fan as well as the included heat pads. The speeds are everything I expected and the included Thunderbolt cable works properly. It is a bit short for me, but it is the length specified in the product description. I am happy with the replacement and feel capable of recommending it. If you want external drive speeds close to the speed of your computer memory consider this enclosure. --------------- I recently bought the version of this enclosure that contains a fan for cooling and when I tried to leave a review desertcart told me that I had already reviewed it, although that version was the version without the fan, so I am adding this review to the end of the original review. While the original enclosure is a great way of adding high speed memory to your system it suffered from one drawback and that is it needs cooling. I solved the problem by buying a small muffin fan and attaching it to the enclosure and, with that, it ran cool and I had no heat issues. This new enclosure solves that problem and I have replaced the version without the fan with this one. This is a first class enclosure with transfer speeds as high, if not higher, than the internal memory of my Mac M2 Mini. Repeated use of the Black Magic speed app showed no slowdowns due to thermal throttling so it is dependable and fast, even after long use. Thee are some minor issues. First, the manual that comes with the enclosure is the manual for the version without the fan so it contains no information about the cooling fan. There is a small button on the side of the enclosure to turn the fan on and off, but even when holding the unit next to my face I could not feel air moving. To be sure that the fan was working I had to hold it next to my ear, and I could hear it running. There is also a small LED on the side of the enclosure and it shows a constant light when the fan is running and a blinking light when the fan is not running. I have picked up the enclosure during the day and found it to be slightly warm while the old enclosure was hot to the touch without the muffin fan I attached. This is a great enclosure and I believe that it deserves the 5 stars I have given it.
Review: Reliable, fast, solid construction, easy to re/use with no tools, stays fairly warm - This enclosure seems reliable, fast, easy to use, and is recommended (though a major caveat is I’m a first-time user of SSD enclosures and in the first month of use.) FEATURES The enclosure is aluminum and seems solid. The no-tool installation was super fast and easy. ACASIS includes plastic spacers so SSD sizes shorter than 2280 are supported, plus there are couple thickness of thermal stickers ready to apply that help dissipate heat between drive and enclosure. The installation could not have been easier, plus it’s easy to pop open if needed. The kit also comes with a USB4 compatible wire that’s less than 12” long. That’s short but I’ve read this length is best for highest transfer speeds in USB4 so doesn’t seem a shortcoming of ACASIS. BASIC SETUP So far it’s been fast and reliable. My setup is 3-partitions on a 4TB drive connected to Thunderbolt/USB4 MacBook for Time Machine backups in one partition, SuperDuper! app weekly backups in another partition, and manual archive in a third. SPEEDY All seems fast, reliable, and compatible with USB flavors from 2.0-4. My SSD supports 3500MB/s transfer with actual rates in practice at around 2750. This is apparently expected performance via Thunderbolt/USB4. Regardless, it’s a helluva lot faster than my old USB3 SSD and platter setups with speeds of just 50-70! WARM The enclosure does stay fairly warm, with added heat during backups. It’s not uncomfortably hot as I can easily tough the enclosure, but it is significant. I don’t have experience here so I can’t say if too hot or fine. Hopefully this won’t bite me later. TO FAN OR NOT TO FAN I was close to choosing an enclosure with a fan because I read lots of reviews about heat issues. I chose against it because there are even more complaints about whining noise and broken fans over time. I figured the fan would be tiny and prone to breaking with replacements hard to find. Then, I’d end up with an enclosure without a fan anyway. I’ll have to see if the heat is a problem over time. SATISFIED All told, this setup seems solid, fast, easy to re/use, and is recommended. Biggest issue maybe heat though it may not because it’s actually normal temp.

## Features

- 【JHL7440 + RTL9210 Dual Chip】: ACASIS 40gbps m.2 nvme ssd enclosure is equipped with the chip JHL7440 +RTL9210, dual chip is more stable and reliable, better heat dissipation, fully compatible USB4, backward compatible with USB3.2/3.1/3.0/2.0. (Note: SSD NOT INCLUDE)
- This 40Gbps M.2 NVMe SSD enclosure, built with a JHL7440+RTL9210 dual chipset and UASP support, features a USB4-compatible Type-C connector for optimal speed and broad compatibility. In tests on a MacBook Pro with a Samsung 980 Pro, it achieved read and write speeds of up to 2805.58MB/s and 2734.79MB/s, respectively (speeds may vary by system).
- 【Widely Compatible】: The nvme enclosure is the first choice for gamers, video editors, photographers and office workers. It supports M/B+M key NVMe SSDs up to 8TB. Compatible with sizes 2230/2242/2260/2280 for Windows/Mac OS/Linux/Android, no drivers required (Note: SATA NGFF SSDs or mSATA SSDs are not supported).
- 【Rugged and Fanless】: nvme ssd enclosure is made of rugged aluminum casing with silicone thermal paste and JHL7440 A new generation of smart chips for better performance and efficient heat dissipation without any noisy mechanical fan.
- 【TOOL-LESS INSTALLATION】: ssd enclosure No screws required, 5-second installation, plug and play. Comes with certified 40Gbps cable, silicone thermal paste. Compact and portable design, ideal for traveling and business trips.
- 【Why can't I reach the expected speed?】 --Expected read/write speeds are 2500-3000Mbps due to the 18Gbps available bandwidth of the Dp signal.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BB74BQVN |
| Best Sellers Rank | #302 in Enclosures |
| Compatible Devices | Laptop, Desktop, Tablet |
| Customer Reviews | 4.5 4.5 out of 5 stars (678) |
| Data Transfer Rate | 2300 Megabytes Per Second |
| Date First Available | August 19, 2022 |
| Hard Disk Form Factor | 22 Millimeters |
| Item Weight | 4.8 ounces |
| Item model number | TBU-401 |
| Manufacturer | ACASIS |
| Max Number of Supported Devices | 1 |
| Memory Storage Capacity | 8 TB |
| Product Dimensions | 3.94 x 0.57 x 2.4 inches |

## Product Details

- **Brand:** ACASIS
- **Hardware Interface:** Thunderbolt
- **Hardware Platform:** Multimedia, Gaming, Business, PC, Linux, Mac
- **Material:** Aluminum
- **Product Dimensions:** 4.09"L x 2.13"W x 0.63"H

## Images

![40Gbps M.2 NVMe SSD Enclosure,Tool Free Installation NVMe ssd Enclosure for M1/M2/ Pro/Air Compatible with thunderbolt3/4/5/USB4/3.2/3.1/3.0/2.0, Support 2280/2260/2242/2230B+M M-Key (TBU401) - Image 1](https://m.media-amazon.com/images/I/512iCDyoG0L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: If this item is not using the faster and most recent or updated chipset is there one that is by this manufacturer and if not then by another one?**
A: a number of Reviews here beginning 9-2022 show THIS product's box is updated model TBU401E.  (with "E")
the box states the included cable is Thunderbolt 3.
it drops the false claim printed on the earlier TBU401 box of "USB 4.0".

-----(  newer TBU401E  )-----
https://m.media-amazon.com/images/I/41n8r+Qr+4L.jpg
https://m.media-amazon.com/images/I/41vqV5YTrjL.jpg
https://m.media-amazon.com/images/I/61iyaANm7qL.jpg
https://m.media-amazon.com/images/I/61TKeFrG5NL.jpg

-----( original TBU401 )-----
https://m.media-amazon.com/images/I/81-0pILAsAL.jpg

it seems like all brand enclosures boasting "40Gbps Thunderbolt4 / USB4" are JHL7440 chipset based.
the JHL7440 is actually Thunderbolt3, (not TB4 or USB4), which actually produces only 22Gbps data transfer.
(per Intel, 18Gbps of 40Gbps is reserved for Displayport video).
they also do not support USB Gen 2x2 20Gbps mandatory with USB4.  only USB 3.1 10Gbps.

there's no telling which exact model ACASIS (or anybody else) is shipping at this very moment.
none can possibly transfer 40Gbps - that's 5000 MB/s.  they all get approx half that.
none are USB4 - their USB interface is only USB 3.1.
that's all there is to it.  the ads are all consistently deceptive and untruthful.
and most Answerers in the Q&A only help compound the fraud.
.

**Q: Does this enclosure support nvme 4.0 or only 3.0? will using a 4.0 capable drive provide speed improvements with this enclosure?**
A: No, you most likely will see no difference as others answered partially but not directly. You are bottlenecked by 1- Thunderbolt 3, which theoretically can handle 40Gbs/5,000MBps, but in the real world in my experience tops at 3,500~ish. 2- Various other parameters such as cable quality, NVME drive technologies, SLC, TLC, QLC, VNAND, etc. 
My suggestion: Buy the BEST NVME 3.0 you can, with the largest DRAM or SLC cache, AND make sure that below that cache it has VNAND instead of regular NAND. Keep an eye on too high densities as well. SLC is faster than TLC which is faster than QLC… Best. R.

**Q: Hi, does this drive run a 10gb if i hook it up to a regular usb 3.2 gen 2 port?  thanks!**
A: USB 3.2 Gen 2 max speed is 10 Gbps. The USB port cannot get faster speed, just because a faster devices was connected to that port.

**Q: What is the difference between tbu401 and tbu401e?**
A: review photos show the models are marked differently on their aluminum bodies.

Model: TBU401
Product: USB 4.0 SSD Enclosure
[plug] USB 4.0

https://m.media-amazon.com/images/I/81CDPDhXKwL.jpg
https://m.media-amazon.com/images/I/81T4g-iTRYL.jpg
https://m.media-amazon.com/images/I/81-0pILAsAL.jpg


Model: TBU401E
Product: NVMe SSD Enclosure
[plug] Type-C 40Gbps

https://m.media-amazon.com/images/I/61TnyPjrIkL.jpg
https://m.media-amazon.com/images/I/51vaS5DXQTL.jpg
https://m.media-amazon.com/images/I/51TWhmCtRpL.jpg
https://m.media-amazon.com/images/I/61TKeFrG5NL.jpg
.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Zoom
*by M***A on May 17, 2023*

When I originally received this enclosure it was missing the heat pad and the usb-c cable that was included was short and only capable of usb 2 speed so when I wrote my original review I complained about the low data speed (30MB/s) and the missing heat pads and only gave the product 3 stars. The enclosure was fine, the accessories were bad or missing. After a long email correspondence with Acacias Customer Support, which included pictures of what I received, they told me that the cable I got was not their cable and so I thought I might have received a device that had been shipped to someone else and returned without the heat pad and with a useless usb cable, and I ordered a replacement. The Acacias product package was not sealed so it was not possible to tell if it already had been opened. The replacement just came in and when I opened the package (it was also not sealed) it contained a proper Thunderbolt 4 cable and the heat pad, and when I tested it I received the kind of speeds I expected - about 2800 MB/s using the WD 1 TB 2280 memory. That makes it clear that I received the bad usb cable due to my original order having been returned to Amazon by another customer and not due to the fault of the vendor, so I have revised my review. This enclosure works very well, although it does get very warm and probably needs a cooling fan as well as the included heat pads. The speeds are everything I expected and the included Thunderbolt cable works properly. It is a bit short for me, but it is the length specified in the product description. I am happy with the replacement and feel capable of recommending it. If you want external drive speeds close to the speed of your computer memory consider this enclosure. --------------- I recently bought the version of this enclosure that contains a fan for cooling and when I tried to leave a review Amazon told me that I had already reviewed it, although that version was the version without the fan, so I am adding this review to the end of the original review. While the original enclosure is a great way of adding high speed memory to your system it suffered from one drawback and that is it needs cooling. I solved the problem by buying a small muffin fan and attaching it to the enclosure and, with that, it ran cool and I had no heat issues. This new enclosure solves that problem and I have replaced the version without the fan with this one. This is a first class enclosure with transfer speeds as high, if not higher, than the internal memory of my Mac M2 Mini. Repeated use of the Black Magic speed app showed no slowdowns due to thermal throttling so it is dependable and fast, even after long use. Thee are some minor issues. First, the manual that comes with the enclosure is the manual for the version without the fan so it contains no information about the cooling fan. There is a small button on the side of the enclosure to turn the fan on and off, but even when holding the unit next to my face I could not feel air moving. To be sure that the fan was working I had to hold it next to my ear, and I could hear it running. There is also a small LED on the side of the enclosure and it shows a constant light when the fan is running and a blinking light when the fan is not running. I have picked up the enclosure during the day and found it to be slightly warm while the old enclosure was hot to the touch without the muffin fan I attached. This is a great enclosure and I believe that it deserves the 5 stars I have given it.

### ⭐⭐⭐⭐⭐ Reliable, fast, solid construction, easy to re/use with no tools, stays fairly warm
*by C***P on November 20, 2024*

This enclosure seems reliable, fast, easy to use, and is recommended (though a major caveat is I’m a first-time user of SSD enclosures and in the first month of use.) FEATURES The enclosure is aluminum and seems solid. The no-tool installation was super fast and easy. ACASIS includes plastic spacers so SSD sizes shorter than 2280 are supported, plus there are couple thickness of thermal stickers ready to apply that help dissipate heat between drive and enclosure. The installation could not have been easier, plus it’s easy to pop open if needed. The kit also comes with a USB4 compatible wire that’s less than 12” long. That’s short but I’ve read this length is best for highest transfer speeds in USB4 so doesn’t seem a shortcoming of ACASIS. BASIC SETUP So far it’s been fast and reliable. My setup is 3-partitions on a 4TB drive connected to Thunderbolt/USB4 MacBook for Time Machine backups in one partition, SuperDuper! app weekly backups in another partition, and manual archive in a third. SPEEDY All seems fast, reliable, and compatible with USB flavors from 2.0-4. My SSD supports 3500MB/s transfer with actual rates in practice at around 2750. This is apparently expected performance via Thunderbolt/USB4. Regardless, it’s a helluva lot faster than my old USB3 SSD and platter setups with speeds of just 50-70! WARM The enclosure does stay fairly warm, with added heat during backups. It’s not uncomfortably hot as I can easily tough the enclosure, but it is significant. I don’t have experience here so I can’t say if too hot or fine. Hopefully this won’t bite me later. TO FAN OR NOT TO FAN I was close to choosing an enclosure with a fan because I read lots of reviews about heat issues. I chose against it because there are even more complaints about whining noise and broken fans over time. I figured the fan would be tiny and prone to breaking with replacements hard to find. Then, I’d end up with an enclosure without a fan anyway. I’ll have to see if the heat is a problem over time. SATISFIED All told, this setup seems solid, fast, easy to re/use, and is recommended. Biggest issue maybe heat though it may not because it’s actually normal temp.

### ⭐⭐⭐⭐⭐ Review
*by C***. on August 26, 2023*

I recommend

## Frequently Bought Together

- ACASIS 40Gbps M.2 NVMe SSD Enclosure, Tool Free Installation, TBU 401 for M1 M2 Pro/Max,Compatible with thunderbolt3/4/5,USB4/3.2/3.1/3.0/2.0, Support SSD Size 2280/2260/2242/2230 B+M M-Key (TBU401)
- Samsung 990 PRO SSD NVMe M.2 PCIe Gen4, M.2 2280 Internal Solid State Hard Drive, Seq. Read Speeds Up to 7,450 MB/s for High End Computing, Gaming, and Heavy Duty Workstations, MZ-V9P2T0B/AM

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-11*