The Guru of 3D published a review on the Plextor M9Pe 512GB M2 NVMe SSD
A quote from the article:
Plextor today releases their fast M9Pe 512GB Series M.2 SSDs. These new M.2 units use the Non-Volatile Memory Express (NVME) protocol combined with a fast controller and the new BiCS 64-layer Toshiba NAND flash memory. Yeah, that means storage technology at terrific speeds while offering a competitive price.Plextor M9Pe 512GB M2 NVMe SSD Review @ Guru3D