This is an exceptional SSD enclosure. My Mac with Catalina is case sensitive. The chipset used is the highly reliable ASM235CM controller. I used a 4TB Sandisk SSD in this case and it works exceptionally well. Also recognizes a 250GB Samsung drive I pulled out of a Windows computer (exfat) and I can read the files on my Mac. This is the best external hard drive enclosure I have ever used. I only have one suggestion: can you make an SSD only version so it's much more compact? For example, Vantec makes an all-aluminum case that's molded to fit a 2.5-inch SATA SSD. Using the JMicron chipset, which is fine, but I prefer the asm chipset. The Vantec case also has a switch to prevent files from being written or deleted when you turn it on. I think it's pretty helpful. Overall the UGreen case is fantastic and just works, highly recommend!