ACASIS vs FREEGENE SSD Enclosures: Which Brand Fits You?
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This ACASIS vs FREEGENE SSD enclosure comparison helps you choose the right portable drive solution. Both enclosures support 40Gbps transfer speeds and use the JHL7440 controller chip for reliable performance. They share broad compatibility with M.2 NVMe drives in standard sizes. The main difference lies in their physical design and thermal management. One model includes an active cooling fan, while the other relies on passive dissipation in a slightly smaller chassis. You need to weigh cooling needs against portability.
Key differences
| Aspect | ACASIS 40Gbps M.2 NVMe Enclosure with Fan | ACASIS 40Gbps M.2 NVMe Enclosure |
|---|---|---|
| Cooling System | Active fan, aluminum alloy, thermal pad | Passive (not listed) |
| Host Interface | USB4, Thunderbolt 5/4/3 | USB4, USB 3.2/3.1/3.0/2.0 |
| Dimensions | 4.65 x 2.24 x 0.71 inches | 3.96 x 1.92 x 0.6 inches |
| Weight | 4.83 ounces | 5.61 ounces |
Which one should you choose?
Choose ACASIS 40Gbps M.2 NVMe Enclosure with Fan if
- You require active cooling to maintain drive temperatures during intensive video editing or large file transfers.
- You need compatibility with Thunderbolt 5 and Thunderbolt 4 hosts in addition to USB4.
- You prefer a lighter enclosure that is easier to carry in a pocket or small bag.
Choose ACASIS 40Gbps M.2 NVMe Enclosure if
- You prioritize a more compact form factor for maximum portability and minimal bulk.
- You do not need active fan noise and prefer a completely passive thermal design.
- You are connecting to hosts that only support USB 3.2 or older USB standards.
Verdict: The ACASIS model with the fan is better for users who need active thermal management and Thunderbolt 5 support. The compact FREEGENE-style option suits travelers who want the smallest possible footprint. Both deliver identical peak speeds for most daily tasks.
ACASIS vs FREEGENE Enclosure Specs
Cooling System
The ACASIS 40Gbps M.2 NVMe Enclosure with Fan stands out with its active cooling solution. It includes a built-in silent cooling fan that you can activate via a switch. This fan works with aerospace-grade aluminum alloy and a high-conductivity silicone thermal pad to create a triple heat dissipation system. This setup helps maintain optimal performance during high-intensity workloads. In contrast, the FREEGENE TBU405 relies solely on passive cooling. While it mentions better heat dissipation in its features, it lacks a dedicated fan or active airflow component. For users running large files or video editing tasks, the active fan on the ACASIS model provides a clear thermal advantage.
Physical Dimensions
You will notice a difference in the physical footprint of these two enclosures. The ACASIS model measures 4.65 inches in length, 2.24 inches in width, and 0.71 inches in height. It weighs 4.83 ounces. The FREEGENE TBU405 is more compact, measuring 3.96 inches in length, 1.92 inches in width, and 0.6 inches in height. However, the FREEGENE unit is heavier at 5.61 ounces. If you prioritize a smaller device that fits easily into a pocket or small bag, the FREEGENE enclosure offers a tighter profile. The ACASIS is slightly larger but lighter, which may matter for weight-sensitive travel setups.
Host Interface
Both enclosures support high-speed connections, but they differ in their forward compatibility. The ACASIS enclosure explicitly supports Thunderbolt 5, alongside Thunderbolt 4/3 and USB4. This makes it ready for next-generation hosts that may appear in the near future. The FREEGENE TBU405 supports USB4, USB 3.2, USB 3.1, USB 3.0, and USB 2.0. It does not list Thunderbolt 5 support. Both utilize the Intel JHL7440 chip for stable performance. If you plan to use the latest Thunderbolt 5 hosts, the ACASIS model is the better choice. Otherwise, both offer robust backward compatibility with standard USB standards.
Transfer Speed
Both products claim identical maximum transfer speeds of 40Gbps. The ACASIS enclosure lists tested read/write speeds of up to 2805 MB/s and 2734 MB/s when used with a Samsung 980 Pro on a MacBook. The FREEGENE enclosure also reports these exact same speeds: 2805 MB/s read and 2734 MB/s write, tested with a Samsung 980 EVO Plus on a MacBook Pro. Since both use the same JHL7440 controller and advertise the same theoretical and tested limits, neither holds a performance edge here. You can expect similar real-world throughput from either device when paired with a fast NVMe drive.
Compatibility
Both enclosures support the same M.2 NVMe drive sizes, including 2230, 2242, 2260, and 2280. They are compatible with Windows, macOS, and Linux. The ACASIS enclosure specifically mentions support for M3, M4, and M5 Mac chips, covering the latest Apple Silicon generations. The FREEGENE enclosure lists compatibility with M1 Pro/Max Mac devices and iPad Pro. While both cover major platforms, the ACASIS specification is more future-proof regarding newer Mac processors. If you are using the latest M4 or M5 hardware, the ACASIS model ensures broader explicit support.
Choose Your Ideal NVMe Enclosure
Users needing active cooling for heavy loads
This ACASIS model includes a built-in silent cooling fan. You can activate it via a switch to maintain optimal performance during high-intensity tasks. The triple heat dissipation system combines the fan with aerospace-grade aluminum alloy and a high-conductivity silicone thermal pad. This active cooling ensures stability when transferring large files or editing video.
Those prioritizing compact portability and weight
This FREEGENE enclosure is slightly smaller and lighter than the fan-equipped ACASIS version. It measures 3.96 inches in length and weighs 5.61 ounces. The pocket-sized design fits easily in a handbag or pocket. It is ideal for travelers who need a reliable 40Gbps connection without the extra bulk of an active cooling fan mechanism.
Buyers wanting Thunderbolt 5 and future-proofing
The ACASIS enclosure features the Intel-certified JHL7440 chip and supports Thunderbolt 5, along with Thunderbolt 4, 3, and USB4. This backward compatibility ensures steady connections across various systems. It is tailored for high-end hardware like M3, M4, and M5 MacBooks. If you plan to upgrade to newer Thunderbolt standards, this model offers broader interface support.
The products compared
ACASIS 40Gbps M.2 NVMe Enclosure with Fan
Best for: MacBook Pro users needing active cooling
- Max Transfer Speed
- 40Gbps
- Host Interface
- Thunderbolt 5/4/3, USB4, USB 3.2
- Drive Interface
- NVMe
- Supported Form Factors
- 2230, 2242, 2260, 2280
- Cooling System
- Silent cooling fan, aluminum alloy
- Dimensions
- 4.65 × 2.24 × 0.71 inches
View on Amazon: ACASIS 40Gbps M.2 NVMe Enclosure with Fan Affiliate link
This ACASIS enclosure uses the Intel JHL7440 chip to support USB4 and Thunderbolt 5/4/3 connections. It includes an active cooling fan, thermal pad, and aluminum alloy housing to manage heat. You get tested speeds up to 2805 MB/s read. It fits M.2 drives in 2230, 2242, 2260, and 2280 sizes. The design suits Mac and PC users needing high-speed data access.
Pros
- Intel JHL7440 chip ensures dual-chip reliability
- Active cooling fan with thermal pad
- Supports USB4, Thunderbolt 5/4/3, and USB 3.2
- Fits M.2 2230, 2242, 2260, and 2280 drives
Cons
- Requires power for the active cooling fan
- Heavier than passive aluminum-only enclosures
- No included M.2 NVMe drive
Good fit if
- You use a MacBook Pro with M1, M2, or M3 chips
- You need Thunderbolt 4 or USB4 connectivity
- You run high-capacity drives that generate heat
Skip if
- You want a completely passive cooling solution
- You only have USB 3.0 ports
- You need a drive smaller than 2230
Verdict: ACASIS 40Gbps NVMe Enclosure with Fan provides robust thermal management for power users. It is ideal for professionals who need sustained high speeds on Mac or PC workstations.
ACASIS 40Gbps M.2 NVMe Enclosure
Best for: portable high-speed storage for Mac users
- Max Transfer Speed
- 40Gbps
- Host Interface
- USB4, USB 3.2/3.1/3.0/2.0
- Drive Interface
- M.2 NVMe
- Supported Form Factors
- 2230, 2242, 2260, 2280
- Dimensions
- 3.96 × 1.92 × 0.6 inches
- Weight
- 5.61 ounces
View on Amazon: ACASIS 40Gbps M.2 NVMe Enclosure Affiliate link
The FREEGENE TBU 405 is a compact M.2 NVMe enclosure supporting USB4 and USB 3.2 interfaces. It features a JHL7440 certified chip for stable performance, reaching speeds up to 40Gbps. The unit handles 2230, 2242, 2260, and 2280 drive sizes. It fits easily in a pocket or bag. You get reliable connectivity for Mac and Windows systems without the bulk of larger cases.
Pros
- Supports USB4 and USB 3.2 for up to 40Gbps transfer speeds
- JHL7440 certified chip ensures stable dual-chip control
- Compatible with M.2 NVMe drives in 2230, 2242, 2260, and 2280 form factors
- Compact dimensions of 3.96 x 1.92 x 0.6 inches fit in a pocket
Cons
- Includes only the enclosure, not the SSD
- Weighs 5.61 ounces, which is heavier than basic aluminum shells
- No active cooling fan included in this model
Good fit if
- You need a pocket-sized enclosure for travel
- You use M1 or M2 Pro/Max Mac devices
- You require support for multiple M.2 drive lengths
Skip if
- You want an active cooling fan for thermal management
- You prefer a drive that includes the SSD
- You need a larger chassis for better passive heat dissipation
Verdict: FREEGENE TBU 405 NVMe Enclosure offers a certified JHL7440 chip and 40Gbps speed in a pocket-friendly size. It suits travelers who need reliable USB4 compatibility for Mac or Windows without carrying a bulky case.
Specifications side by side
| Spec | ACASIS 40Gbps M.2 NVMe Enclosure with Fan | ACASIS 40Gbps M.2 NVMe Enclosure |
|---|---|---|
| Max Transfer Speed | 40Gbps | 40Gbps |
| Host Interface | Thunderbolt 5/4/3, USB4, USB 3.2 | USB4, USB 3.2/3.1/3.0/2.0 |
| Drive Interface | NVMe | M.2 NVMe |
| Supported Form Factors | 2230, 2242, 2260, 2280 | 2230, 2242, 2260, 2280 |
| Cooling System | Silent cooling fan, aluminum alloy | not stated |
| Interface | NVMe | NVMe |
| Form Factor | M.2 2280 | M.2 2280 |
| Cooling | Cooling Fan | not stated |
| Transfer Speed | 40Gbps | 40Gbps |
| Dimensions | 4.65 × 2.24 × 0.71 inches | 3.96 × 1.92 × 0.6 inches |
| Weight | 4.83 ounces | 5.61 ounces |
| Size | 2230/2242/2260/2280 | TBU405 |
| Color | black | not stated |
| Model | TBU401 Pro | TBU405 |
Frequently asked questions
Does the ACASIS enclosure have active cooling?
Yes, the ACASIS 40Gbps M.2 NVMe Enclosure with Fan includes a built-in silent cooling fan. You can activate it via a switch to maintain optimal temperatures during high-intensity tasks. This active cooling system helps sustain high transfer speeds for power users who need robust thermal management.
Which enclosure is better for MacBook Pro users?
The ACASIS 40Gbps NVMe Enclosure with Fan is ideal for MacBook Pro users needing active cooling. It provides robust thermal management for sustained high speeds on Mac workstations. The included fan ensures your drive stays cool during heavy data transfers, making it a reliable choice for professional workflows.
What NVMe sizes do these enclosures support?
The ACASIS model supports 2230, 2242, 2260, and 2280 form factors. The FREEGENE TBU405 is specified for M.2 2280 drives. Both enclosures allow you to use standard NVMe SSDs, though you must ensure your drive matches the specific size compatibility listed for each brand.
Are both enclosures USB4 compatible?
Yes, both enclosures support 40Gbps transfer speeds, which indicates USB4 compatibility. The FREEGENE TBU405 explicitly uses a certified JHL7440 chip for reliable USB4 performance. This ensures you can achieve high-speed data transfers on Mac or Windows systems that support the USB4 standard.
Which enclosure is more portable?
The FREEGENE TBU405 is designed for portability with a pocket-friendly size. It measures 3.96 inches in length and weighs 5.61 ounces. This compact form factor suits travelers who need reliable high-speed storage without carrying a bulky case, making it easier to transport than larger alternatives.
Does the ACASIS enclosure come in different colors?
The ACASIS 40Gbps M.2 NVMe Enclosure with Fan is available in black. This color option provides a professional look suitable for office or home setups. The specific model, TBU401 Pro, features this finish to match modern electronic devices.
What is the weight of the ACASIS enclosure?
The ACASIS 40Gbps M.2 NVMe Enclosure with Fan weighs 4.83 ounces. This weight reflects the inclusion of the internal cooling fan and aluminum alloy construction. It offers a sturdy feel while remaining light enough for desktop use or occasional transport.
Can I use the FREEGENE enclosure with Windows?
Yes, the FREEGENE TBU405 NVMe Enclosure is compatible with Windows. It offers reliable USB4 compatibility for both Mac and Windows systems. You can use it to expand storage on your Windows PC with high-speed data transfer capabilities.