I have the k6+ mobo and a samsung 950 pro mounted to the m.2 slot. The drive doesn't say its mounted in the uefi but still recognized as bootable. It isn't recognized as a sata drive either. It does boot windows from the m.2 drive but when running a speed test I only get reads of 1500 MB/s and writes of 150 MB/s!! The write speed is more concerning. Does anyone have any idea what is going on? The board supports NVME and pcie x4 for m.2