---
product_id: 649650368
title: "FREEGENE ACASIS 40Gbps M.2 NVMe SSD Enclosure, TBU 405 for M1 M2 Pro/Max, Compatible with USB4/3.2/3.1/3.0/2.0, Support SSD Size 2280 B+M M-Key"
brand: "freegene"
price: "R$2308"
currency: BRL
in_stock: true
reviews_count: 5
category: "Freegene"
url: https://www.desertcart.com.br/products/649650368-freegene-acasis-40gbps-m-2-nvme-ssd-enclosure-tbu-405
store_origin: BR
region: Brazil
---

# 40Gbps ultra-fast transfer Universal multi-OS & device support Advanced heat dissipation FREEGENE ACASIS 40Gbps M.2 NVMe SSD Enclosure, TBU 405 for M1 M2 Pro/Max, Compatible with USB4/3.2/3.1/3.0/2.0, Support SSD Size 2280 B+M M-Key

**Brand:** freegene
**Price:** R$2308
**Availability:** ✅ In Stock

## Summary

> ⚡ Unlock pro-level speed and versatility anywhere you go!

## Quick Answers

- **What is this?** FREEGENE ACASIS 40Gbps M.2 NVMe SSD Enclosure, TBU 405 for M1 M2 Pro/Max, Compatible with USB4/3.2/3.1/3.0/2.0, Support SSD Size 2280 B+M M-Key by freegene
- **How much does it cost?** R$2308 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/649650368-freegene-acasis-40gbps-m-2-nvme-ssd-enclosure-tbu-405)

## Best For

- freegene enthusiasts

## Why This Product

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

## Key Features

- • **Blazing 40Gbps Speed:** Experience lightning-fast read/write up to 2805/2734MB/s for seamless workflows.
- • **Cross-Platform Powerhouse:** Effortlessly compatible with Mac M1/M2 Pro/Max, iPad Pro, Windows, Linux & USB4/3.x/2.0.
- • **JHL7440 Certified Dual Chip:** Ensures rock-solid stability and superior heat management under heavy loads.
- • **Massive 8TB Storage Support:** Scale your data needs with support for high-capacity M.2 NVMe SSDs up to 8TB.
- • **Travel-Ready Compact Design:** Sleek, pocket-sized aluminum enclosure built for on-the-go professionals.

## Overview

The FREEGENE ACASIS TBU 405 is a premium M.2 NVMe SSD enclosure delivering up to 40Gbps transfer speeds with certified dual-chip stability and advanced cooling. Compatible with Mac M1/M2 Pro/Max, iPad Pro, Windows, and Linux, it supports SSD sizes 2280 B+M M-Key up to 8TB. Its compact aluminum design makes it the ultimate travel-friendly storage solution for professionals demanding speed, reliability, and universal compatibility.

## Description

ACASIS 40Gbps M.2 NVMe SSD Enclosure, with Cooling Fan, TBU 405 for M1 M2 Pro/Max, Compatible with 、USB4/USB3.2/3.1/3.0/2.0, M.2 Enclosure Support 2280/2260/2242/2230 (TBU405)

Review: 「MP600 PRO XT CSSD-F8000GBMP600PXT」を内蔵して使っています。8TB と正常に認識されています。このNVMEは両面実装なので、その配慮もあると、もっと良かったです。
Review: Works great speeds nearly 4,000Gbps great value

## Features

- LIGHTENING-FAST 40Gbps. Speed test with Samsung 980 EVO Plus on Macbook Pro, the Read / Write speed of ACASIS 40Gbps nvme enclosure reaches up to 2805MB/s / 2734MB/s(Different speed may vary from different system).
- JHL7440 CERTIFIED CHIP: Dual chip control, more stable and reliable, better heat dissipation, fully compatible with USB 4/3.2/3.1/3.0/2.0.（Note：SSD NOT INCLUDE）
- UNIVERSAL COMPATIBILITY: This M.2 NVMe Enclosure supports M1 Pro/Max Mac devices and iPad Pro.Compatible with Windows, macOS and Linux. Compatible with USB 4/3.2/ 3.1/ 3.0/ 2.0 at respective speed limits to meet a variety of work and daily needs.
- POCKET SIZE TRAVEL-FRIENDLY: This compact design make TBU 405 easy to be carried in a handbag or pocket, nice for travel &business trips.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BBZT42HC |
| Best Sellers Rank | #108,915 in Computers ( See Top 100 in Computers ) #479 in Enclosures |
| Compatible devices | Laptop |
| Connectivity technology | Thunderbolt |
| Data transfer rate | 600 Megabytes Per Second |
| Hard disk form factor | 2.5 Inches |
| Item model number | TBU405 |
| Item weight | 0.16 Kilograms |
| Manufacturer | FREEGENE |
| Material | Aluminum |
| Max number of supported devices | 1 |
| Memory storage capacity | 8 TB |
| Product Dimensions | 10.06 x 4.88 x 1.52 cm; 159 g |

## Product Details

- **Brand:** FREEGENE
- **Colour:** Space grey
- **Hardware interface:** USB
- **Hardware platform:** Windows
- **Product dimensions:** 10L x 6.1W x 1.5H centimeters

## Images

![FREEGENE ACASIS 40Gbps M.2 NVMe SSD Enclosure, TBU 405 for M1 M2 Pro/Max, Compatible with USB4/3.2/3.1/3.0/2.0, Support SSD Size 2280 B+M M-Key - Image 1](https://m.media-amazon.com/images/I/71HczCYLl3L.jpg)

## Questions & Answers

**Q: Is this the newest model or is there a newer model out?**
A: who can tell what's truthful, with all this bogus 40Gbps USB4 marketing documentation.
the ACASIS site presently states this TBU405 contains "Intel® JHL7440 Thunderbolt™3 with REALTEK® RTL9210B"
that USB interface chip RTL9210B is USB 3.1 • 10Gbps.
but the Q&A here states it's a different chip JMS583 with that same lowly USB 3.1 • 10Gbps.

the ACASIS tool-less model TBU401 is now shipping with TBU401e on the box.  "e".
but that Amazon sales page and the ACASIS online marketing page don't mention anything about that "e" model update.
it's also documented to contain a RTL9210B chip.  but a video shows it formerly contained a JMS583.
https://www.amazon.com/ask/questions/Tx220PG5HNIY0I3

so.  what you see here might NOT be what you get.
.

**Q: Looking for those who have tried a wd sn850x gen4 in this tbu-405 enclosure. all work well? any performance drop / fails? does it handle gen4 well?**
A: based on below details
• there is adequate power supplied by TB.
• but insufficient power from native USB.

google online image of this WD SN850X sticker shows 3.3V x 2.8A = 9.24 watts.
M.2 specification 1.0 states its max power limit is 8.25 watts.
that's a little puzzling isn't it?

this enclosure's Intel JHL7440 Thunderbolt3 chip datasheet average TDP power is stated to be 2.4W
exactly how much more power this enclosure requires isn't disclosed.
9.24 + 2.4 = 11.64 watts

native USB4 per published specification can supply only 7.5W
(for x2 lane, only 4.5W for USB x1 lane)
Thunderbolt3/4 specs are not publicly available, but unqualified online claims say 15W


------------------------------------
regarding speed of this Gen4 7300 MB/s SSD
it can get only approx 2750 MB/s in this Gen3 enclosure.

if you're happy with that substandard performance from Gen4, very good
but it's not even Gen3 top speed.

**Q: What is the difference between acasis tbu401 & tbu405?**
A: according to the Seller in that ad, the two models have the exact same chipset.
so the functional difference would seemingly be only that the 401 is tool-less.

https://www.amazon.com/ask/questions/Tx220PG5HNIY0I3

**Q: Compatible with Samsung 980 or 990 Pro?**
A: Yes, I have the 1TB Samsung 980 Pro running  in my Acasis case  with no problems on either MacBook Pro or Mac Mini Pro.

## Customer Reviews

### ⭐⭐⭐⭐ Review
*by A***ー on 1 August 2023*

「MP600 PRO XT CSSD-F8000GBMP600PXT」を内蔵して使っています。8TB と正常に認識されています。このNVMEは両面実装なので、その配慮もあると、もっと良かったです。

### ⭐⭐⭐⭐⭐ Review
*by A***R on 16 August 2025*

Works great speeds nearly 4,000Gbps great value

### ⭐⭐⭐⭐⭐ Review
*by R***A on 6 July 2025*

I’m thoroughly impressed with the ACASIS 40Gbps M.2 NVMe SSD Enclosure. The speed is outstanding—file transfers are incredibly fast and efficient, exactly what you’d expect from a 40Gbps-capable device. I’ve used it with several SSDs, and performance has been consistently smooth and reliable. The aluminum build is solid and professional, keeping the drive cool even during extended use. Setup was truly plug-and-play, and it worked seamlessly across my Mac and Windows devices. After 6 months of regular use, I can confidently say that I haven’t encountered a single issue. Whether for backups, large file transfers, or portable storage, this enclosure delivers top-tier performance and durability. Highly recommended for anyone who wants reliable, high-speed external SSD access.

## Frequently Bought Together

- ACASIS 40Gbps M.2 NVMe SSD Enclosure, TBU405 for M1 M2 Pro/Max, Compatible with Thunderbolt 4/3/USB3.2/3.1/3.0/2.0, M.2 Enclosure Support SSD 2280/2260/2242/2230 B+M M-Key
- 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 Brazil*
*Store origin: BR*
*Last updated: 2026-01-22*