Will it work if I put my M.2 NVMe PCIe 3.0 x2 SSD (A toshiba one) into a new board I'm getting with an Ultra M.2 PCIe Gen 3.0 x4 slot?
Motherboard in question.Please state the make and model of both the motherboard the SSD. We can't make suggestions unless we know what we're dealing with. If you can't verify what you have, parsing links to the parts will help.