Samsung 512GB PCIe x4 M.2 (OEM) PM961 NVMe Gen3 SSD For ultrabook MZVLW512HMJP Hello, Thank you so much for looking at my listing. I am selling Samsung 512GB M.2 PCI-e solid state drives (SSD). These are brand new drives that were pulled from brand new Lenovo machines, these are not used at all. They were only powered on to check functionality, and to format the existing partition. These are PCI-e M.2 drives these will not function well or at all if inserted into a SATA M.2 slot (Please check your devices drive compatibility before purchasing) These will not work with Apple devices, Apple uses their own type of M.2 adapter ( Again check compatibility) I offer free shipping and take returns, i also ship next day. My cutoff is at 12pm noon. Anyways thanks and feel free to ask any questions.