I received this on August 25, 2022. I immediately installed a Samsung 980 Pro 1TB NVMe, then plugged the dock into AC power via the included power supply brick and into the Mac Studio M1 Ultra via the included Thunderbolt 3 cable. The performance to/from the Samsung 980 Pro 1TB NVMe is what I had hoped.
This is more than 3X faster than any other dock in this form factor available today. Sure, it’s not PCIe 4.0 NVMe speeds, but given that all other docks available in this form factor max out at 770 MB/s, and that Thunderbolt 3/4 is 5 GB/s, this is great.
I also checked some of the data in system report. All looks OK.
My first impression: this is the only dock to buy if you want NVMe in this form factor. Nothing else comes close speed-wise. Yes it’s pricey. Yes, it’s not a big brand name in North America. But they did the right thing with PCIe lane allocation, which hasn’t happened with OWC, Satechi or anyone else.
There’s really no point in buying a dock with NVMe if it won’t ever be able to run much faster than a good SATA SSD (I hope OWC, Satechi, Hagibis, AGPTEK, Qwizlab and others are paying attention). Buy this dock if you need NVMe storage. I can’t speak to longevity yet, but my initial rating: 5 out of 5 stars.