MAIWO 4 Bay M.2 NVMe SSD Enclosure with USB4 Port with Cooling Fan, Support 1-to-3 Offline Clone, 40Gbps High Speed, Backward Compatible Thunderbolt 4/3

Why did you pick this product vs others?:I will say the jury is still somewhat out on this, but I really like it. I put four 4TB m.2 drives in it in a RAID 5 setup. I've been using the m.2 form factor for a long time now and I knew the heat would be an issue with the high-capacity drives, so I added some rather husky heat sinks and, following some advice in the other comments here, added an external fan on the top of the case. It's been working perfectly for about 4 months now. The Thunderbolt connection is solid and fast. Look in the other reviews for the Amazon link to the heat sinks and the cooling fan that's mentioned as quiet. It's a minor project to set all of this up and get it to fit inside the case (heat sinks are a tight fit) and you will have to drill a hole for the fan wire to get to the PCB plug. Do all that and you'll be happy.

I tested the MAIWO 40Gbps M.2 NVMe SSD Enclosure with a Samsung 980 PRO 2TB SSD, and the results were impressive. Sequential read and write speeds reached 3793 MB/s and 3432 MB/s, respectively, which is excellent for an external NVMe SSD enclosure. Random read and write speeds were also reasonable, though write speeds on smaller blocks could be improved.The build quality is solid, and setup was straightforward. However, I noticed the enclosure does heat up during sustained workloads. While it didn’t throttle performance in my use case, it’s something to consider if you frequently transfer large files or use it intensively for extended periods.Overall, this is a great product for those looking for a high-performance external SSD solution, but be mindful of potential heat buildup during prolonged use.

Satisfied with the device and speed. I purchased this to run VM's (mainly Windows 11) on my Mac Mini M4. The speeds are more than acceptable. I ran the first screenshot within my Windows 11 VM and maybe VMware is caching as seems a bit high but ran Amorphous (similar to CrystalDiskMark) on the Mac and got more reasonable results with my Samsung 980 1TB drive. The fan is a little noisy as others have stated, with an otherwise silent system, I can hear the fan but with any sort of music/noise going, can't hear it. I will most likely get a longer cable and move under my desk so can't hear it anymore. For the cost, would highly recommend.

Platform: AM5, Windows 10 Pro, USB40 PortSSD: Samsung 980 Pro 2TB (60% Full), Health 98%Cables Used: Cable Matters [Intel Certified] 40Gbps Thunderbolt 4 Cable 3.3ft, Anker USB C Cable (3.3FT, 240W), USB 4 Data Cable, 40Gbps & Included super short USB C Cable, all similar performance.Software used: CrystalDiskMark 8.0.4 (x64)Build quality is great, this thing is heavy for what it is & well built, fan is necessary, has a high pitch whine, but it removes 15-20°C, hope you're ready to get used to it (gets quite hot without it, even on idle) or maybe improvise with another fan. Used my ORICO M.2 NVMe SSD Enclosure, USB 3.1 Gen 2 (10 Gbps) for comparison, only gets lukewarm to the touch, whether in use or idle.Performance was odd at first, the read speeds were what I expected, but the writes only around 558 MB/s, until I remembered to enable Write cache in the device manager, then write speeds shot up to where they should be, around 2800 MB/s.Photos - Left: Write Cache Enabled | Right: Write Cache Disabled

I'm not happy with this enclosure because it gets incredibly hot. It's a good looking enclosure, if a bit heavier and larger than it really needs to be. However, there is just no reason it should get so hot. It's even super hot when the drive is plugged in but sitting idle!I've had it for a week with a 2TB 990 Pro inside and will likely return it. I just can't imagine such heat is good for the longevity of any drive inside. I had hoped to leave it plugged in all the time, but that is absolutely not an option.

Very happy with this NVME Enclosure. Depending on what NVME drive is being used I have seen Read and Write speeds past 7000mbs. Internal fan is quiet I can not hear it. Drive does end making some heat after a long file transfer but performance does not decrease. I do wish the cable it came with was longer and the only issue I had was the aluminum shim it came with was useless when trying to cool the NVME and needs some thermal paste between the lid and metal shim otherwise heat transfer is poor. plus adding thermal paste not only helps drastically with cooling the drive it also keeps the shim stuck to cover.I just ended up using a zip tie to hold a small 40mm fan on the front to cool drive. Soldered up a USB cable to power the fan with 5 volts off PC

i have one of these. i filled it with 4x 2TB NVME drives. works fine on that front. all 4 drives detect just fine. in the description and documentation, says you can soft-raid your drives. nope. not in any dimension or plane of existence can you do that. just says "Operation not supported" other than that it works as advertised. typical throughput i see is about 1.8-2.1gb/s transfer speeds which is dead on for the port speed. i even bought another one of these enclosures to make sure it is not faulty hardware for the raid function. nope. does the same thing. i filled that one up with 2TB drives as well.

Amazingly fast enclosure! Runs hot at times but nothing to be alarmed about. Would definitely purchase from this company again!