Comment by ProllyInfamous

It does not appear that SMART is supported on either version of my TerraMaster enclosures.

Still an inexpensive solution to help ease your transition away from MacPro"5,1"land.

As USB-C is a physical form factor (capable of supporting multiple protocols), I would think that the ability to have multidrive external SMART support would be up to the vendor's choice of datachip/datastream. Again: my Acasis does support SMART for nVMEs.