Here's a simple little gadget, an expansion dock for the M4 Mac mini. It connects to the two front USB-C ports to provide SD and micro SD card slots, 2 x 10 Gbps USB-A ports and 2 x 10 Gbps USB-C ports. If the Mac Studio has the same port spacing, it would also fit that. Pointlee, really, though, because the Mac Studio already has most of those ports available except for the micro SD. The price has come down in the last few days, now available for A$64 (£31). See https://shorturl.at/pzg77 for ore info.