Review on CY USB 3.0 NVME Adapter M-Key M.2 NGFF SSD External PCBA Conveter RTL9210 Chipset with Case - Unleash the Power of NVME Technology for Enhanced External Data Storage by Jay Elgouhari

I've only had it for a day. It's beautiful and durable in terms of construction. Nice metal body. I like the magnetic USB port cover, although I would have liked a hole in the cover for the lanyard so it doesn't get lost. Setup was easy. Insert the NVME disk and secure it with a screw. The NVME drive is a little wobbly as the screw doesn't fully secure it. The biggest problem with installation is that the card has a tall component that sticks out so high that the case cover cannot be installed properly. They have cut outs in the case back but they are not where they should be. See pictures. BTW, this large component is on the adapter board, not on my NVME drive. So you should have known better. I ran some performance tests on multiple PCs with the USB 3 SS port. Using Crystal Disk Mark with a 1GB benchmark, the best I got was around 450MB/s reading and writing. It's still faster than regular USB drives, but it's nowhere near the intended 5Gb/s throughput that this adapter aims to deliver. In this case, the reason for the low speed is probably the USB interface of the PC. I ordered a USB to Thunderbolt adapter to see if the USB port is the bottleneck. Also, many online sources claim that the Realtek chipset in this adapter runs much cooler than the JMicron variants. I have both and to be honest I haven't noticed much of a difference between them. Tested by touch and laser surface thermometers. The JMicron may have run a little hotter, but that could just be a placebo effect. UPDATE: I tested this case with a USB3.0 to Thunderbolt adapter on a laptop's Thunderbolt 3 port and got read and write speeds of around 1000MB/s! The adapter I used B015Z7XE0A.UPDATE2: I contacted the seller about the cap gap issue and they responded very quickly and sent me another adapter with a modified cap that no longer had gap issues. The problem with the new adapter is that it was about 1-2mm thicker and heavier. So I used the cap from the new adapter with the old one and it was perfect. The bad thing is that when I got a new adapter, installed my SDD in it and plugged it into my computer, I got a blue screen error and the drive wouldn't boot. I think the second adapter was bad electrically. If you buy such an adapter, I would first plug it in without an SSD, just in case.