It's certainly beefier than a Mini - 6 TB5 ports (which can drive 6 PCIe 5.0 x4 slots in an enclosure if you want), M3 Ultra, up to 256GB RAM.

The detail you are missing is that one has to buy an additional enclosure and the set of PCI cards is actually limited, hardly workstation class.

This is a workstation,

	▲	tonyedgecombe an hour ago \| parent [-]
		Interesting that all the memory options are "no longer available".