I also tried using an SK Hynix Gold P31 1TB NVME SSD with Acasis USB4/TB3 enclosure, directly connected to M1 Mac Mini via USB4/TB3 port, and it crashed the Mac instantly. Using the SK Hynix with a JEYI USB3.1 v2 (10Gb/sec) enclosure, directly connected via USB4/TB3/USB C port, worked perfectly fine. Also tried 1TB Samsung EVO Plus SSD with Acasis USB4/TB3 enclosure, and that worked as well (though write speed was only around 1,400, while read speed was around 2,400). I also tried a 1TB PNY CS3030 SSD with the Acasis, and it too worked without crashing the M1 Mac Mini (although the read speed was only 770 and the write speed only 1200). So, it seems as though there is an issue with SK Hynix NVME SSD conflicting with Acasis USB4/TB3 enclosures. This is upsetting since the SK Hynix Gold P31 is a very highly rated and great value PCIe 3x4 SSD. I did contact Apple Support and they have escalated the issue to their engineering department. The SK Hynix/Acasis enclosure crash was a kernel panic. Apple also has a copy of my system logs so they can research. I let Apple Support know that the SK Hynix Gold P31 uses their own Cepheus controller chip, while the Acasis USB4/TB3 enclosure uses the Intel 7440 chip for the USB4/TB3 connection, and a J Micron JMS 583 chip for the USB 3.1 connection. Hope that Apple can address this conflict through a software update (I am currently running MacOS 11.3 beta 1, so still waiting for a fix).