Connect a PCIe M. 2 SSD (NVMe or AHCI) to your computer through PCI Express for ultra-fast data access x4 PCI Express to M. 2 PCIe SSD Adapter M. 2 NGFF SSD (NVMe or AHCI) Adapter Card - x4 PCIe expansion card - Expansion bay adapter supports M key M. 2 NGFF PCIe SSD Add a high speed 4-lane M. 2 NGFF SSD such as Samsung 950 Pro or Samsung SM 951 to your PC Wide compatibility with M. 2 SSDs (NVMe and AHCI): 110mm, 80mm, 60mm and 42mm - OS independent for fast and easy set-up