Re: Suggestions on conclusion page, an additional dual M.2 storage via Expander card isn't possible. Alder and Raptor Lake CPUs do not support x8/x4/x4 or x4/x4/x4/x4 bifurcation modes. Only x16/x0 or x8/x8.
This is why on boards which do feature an onboard switched Gen5 M.2 slot, any secondary...