I have read through the manual and both the built in M.2 and the expansion card specifically state "Support PCIe SSD only." But then I have noticed here a number of threads of people installing M.2 with NVMe. But I haven't seen a follow up to the posts if the NVMe drives are getting their full throughput. Does the NVMe work but just not get the full throughput benefit or is the manual outdated? Thanks for any help you can provide.