FREEGENE
FREEGENE ACASIS 40Gbps M.2 NVMe SSD Enclosure
Bottom line: The FREEGENE ACASIS 40Gbps M.2 NVMe SSD Enclosure ($60.79 on Amazon as of 2026-10-06): Intel JHL7440 controller with full USB4, Thunderbolt 4 and Thunderbolt 3 support; main trade-off: fan is off by default; you must press a switch to turn it on.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Intel JHL7440 controller with full USB4, Thunderbolt 4 and Thunderbolt 3 support
- ✓ Rated up to 2805 MB/s read and 2734 MB/s write (Samsung 980 Pro, MacBook)
- ✓ Built-in cooling fan plus aluminum shell to limit thermal throttling
- ✓ Fits 2280, 2260, 2242 and 2230 NVMe SSDs
- ✓ Falls back to USB 3.2/3.1/3.0 for older Windows, Linux and Mac hosts
Cons
- ✗ Fan is off by default; you must press a switch to turn it on
- ✗ Rated speeds trail what a PCIe 4.0 SSD can do inside a desktop
- ✗ Speed drops to USB 3.2 levels on hosts without USB4 or Thunderbolt
- ✗ Listing names NVMe drives only; M.2 SATA support is not stated
Manufacturer description
The ACASIS TBU405 Pro turns a bare M.2 NVMe SSD into a portable 40Gbps drive. It runs on the certified Intel JHL7440 controller and works as a true USB4 enclosure, fully compatible with Thunderbolt 4 and Thunderbolt 3. It also falls back to USB 3.2, 3.1 and 3.0 hosts, so one drive works with both your Mac and your Windows or Linux PC. Speed is the main reason to buy it. ACASIS reports read/write speeds of up to 2805/2734 MB/s, tested with a Samsung 980 Pro on a MacBook. That is fast enough to edit video straight off the drive or to run large backups without waiting. Heat is handled by an…
SpecPicks Verdict
SpecPicks scored FREEGENE ACASIS 40Gbps M.2 NVMe SSD Enclosure using a rating × review-volume × price-fit model applied to published specs and reviews across the ssds & storage category. FREEGENE's ssds & storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for ssds & storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Does the ACASIS TBU405 Pro work with M1, M2 and M3 MacBooks?
Yes. ACASIS lists support for M1, M2 and M3 Pro and Max MacBooks, as well as iPad Pro, Windows and Linux, over Thunderbolt 4, Thunderbolt 3 or USB4.
What SSD sizes fit in this enclosure?
It takes M.2 NVMe SSDs in the 2280, 2260, 2242 and 2230 sizes. ACASIS gives high-capacity drives like the 4TB Samsung 990 Pro as an example.
How fast is the TBU405 Pro in real transfers?
ACASIS reports up to 2805 MB/s read and 2734 MB/s write, tested with a Samsung 980 Pro on a MacBook. Your speeds will depend on your SSD and your host port.
Will it work on a computer with only USB 3.2 or USB 3.0 ports?
Yes. The JHL7440-based enclosure works with USB 3.2, 3.1 and 3.0 ports, but transfers run at that port's lower speed instead of 40Gbps.
Does the cooling fan turn on automatically?
No. Press the switch on the enclosure to turn the fan on. The aluminum shell and heat dissipation holes also help with cooling during heavy workloads.
Key Features
- [Active Cooling] Upgraded 40Gbps NVMe Enclosure with Fan Experience superior heat management with the TBU405 Pro. This aluminum M.2 enclosure features a built-in cooling fan and precision-engineered heat dissipation holes. It’s the ultimate 40Gbps m.2 nvme ssd enclosure designed to prevent thermal throttling, ensuring your M.2 NVMe SSD maintains peak performance and stability during heavy workloads. (Note: Press the switch to activate the fan).
- [JHL7440 Chip] USB4 NVMe Enclosure Equipped with the certified Intel JHL7440 chip, this 40Gbps SSD enclosure offers dual-chip stability. It is a true USB4 NVMe enclosure, fully compatible with Thunderbolt 4, Thunderbolt 3, and backward compatible with USB 3.2/3.1/3.0. Whether you need a Thunderbolt enclosure for a Mac or a USB C SSD enclosure for a PC, ACASIS delivers a reliable connection.
- [Universal Compatibility] M.2 Enclosure for M1/M2/M3 Mac & PC Our SSD enclosure m.2 nvme is tailor-made for high-end hardware, supporting M1/M2/M3 Pro & Max MacBook, iPad Pro, Windows, and Linux. This versatile m.2 enclosure supports various sizes including 2280/2260/2242/2230. It’s the perfect thunderbolt 4 enclosure for power users running high-capacity drives like the 990 pro 4tb, ensuring seamless integration with your professional workstation.
- [Lightning-Fast] 40Gbps M.2 NVMe SSD Enclosure Stop waiting for file transfers. As a 40Gbps NVMe enclosure, it reaches tested Read/Write speeds of up to 2805/2734 MB/s (tested with Samsung 980 Pro on MacBook). This Thunderbolt NVMe enclosure transforms your internal drive into a high-performance Thunderbolt 4 SSD, delivering professional-grade speed for video editing and data backup.
- [Pro Portable Design] Compact Thunderbolt 4 Enclosure Get thunderbolt ssd performance in a pocket-sized form factor. This sleek yet rugged nvme ssd enclosure is travel-friendly and fits easily in your laptop bag. Designed as a premium professional solution, the ACASIS TBU405 Pro is the definitive thunderbolt nvme enclosure and thunderbolt 4 nvme enclosure for pros who need high-speed data access on the go.
Full Specifications
| Brand | FREEGENE |
|---|---|
| Color | Black |
| Material | Aluminum |
| Unit Count | 1.0 Count |
| Connectivity | USB-C |
| Model Number | TBU405 PRO |
| Compatibility | PC, Switch, Mac, Linux |
| Built-In Media | enclosure |
| Mfr Part Number | 1 |
| Hardware Platform | Windows |
| Compatible Devices | M1 Pro/Max Mac devices, iPad Pro |
| Data Transfer Rate | 4.25 Gigabits Per Second |
| Enclosure Material | Aluminum |
| Hardware Interface | Solid State Drive, Thunderbolt |
| Warranty Description | 2 YEAR |
| Hard Disk Form Factor | 22 Millimeters |
| Connectivity Technology | Thunderbolt, USB |
| Memory Storage Capacity | 8 TB |
| Supported Devices Quantity | 1 |
| Full listing title | ACASIS 40Gbps M.2 NVMe SSD Enclosure, with Cooling Fan, M.2 Enclosure Compatible with Thunderbolt 4/3,USB4/USB3.2/3.1/3.0/2.0, TBU 405 Pro for M1 M2 Pro/Max Support 2280/2260/2242/2230 (TBU405 Pro) |
Ready to buy?
ACASIS 40Gbps M.2 NVMe SSD Enclosure, with Cooling Fan, M.2 Enclosure Compatible with Thunderbolt 4/3,USB4/USB3.2/3.1/3.0/2.0, TBU 405 Pro for M1 M2 Pro/Max Support 2280/2260/2242/2230 (TBU405 Pro) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
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