ECM27 is a M.2 NVMe / SATA M.2 SSD adapter card designed for users who wishes to add or expand M.2 SSDs in their system utilizing PCI Express x4 lane or SATA interface. The card supports a total of 3 M.2 SSDs, of the 3, 1 slot utilizes PCIe interface for M Key M.2 NVMe SSD and the other 2 utilizes SATA III interface for B Key M.2 SATA SSDs. For users seeking top speed performance or wishes to increase storage with M.2 SSDs to their PC systems, ECM27 is a great purchase to fulfill this requirement.