Got a little tbolt dock for the Mini. Mainly to break out USB-A ports for MIDI, Scarlett, etc. But it also has an M.2 in it to expand the storage.
@tankgrrl which one did you get? I’m in the market for one, but they seem to all be USB 3.
@eric I got the UGREEN Dock & Stand for Mac mini M4/ M4 Pro with NVMe SSD Enclosure