This chart on the support page lists the i7 12700T as compatible but does not list the i9. Both the 65W and 90W adapter are listed for 35W CPU use.
Dell 3000 mff i3 12100T can i change i7 12700T or i9 12900T the TDP PL1 same 35W but  the TDP PL2 different 69W and 106W. The OEM PSU is 65W if i buy a new 130W PSU can i change cpu?
Dell 3000 i3 12100T change to i9 12900T