Get-CimInstance -CimSession $Session -Namespace "micron/cimv2"
The namespace seems to be at the right place.
However i will think that the -ResourceUri should use somthing similar to
"http://schemas.vmware.com/wbem/wscim/1/cim-schema/2/MICRON_SATADevice"
"http://schema.omc-project.org/wbem/wscim/1/cim-schema/2/MICRON_SATADevice"
"http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/MICRON_SATADevice"
(And the first part has to be obtained from the vendor)