Bought this thinking it would solve my needs for expanding my 256Gb Mac mini M4 storage - which it did. However, was more than I needed as I subsequently bought an SSD Enclosure. Great little dock that does the job for a very good price. Unboxed, plugged in and SSD installed (now removed) to do some file transfer for a couple of hours, then returned to the box. Fits the M4 mini nice and snuggly.
eBay