Amazon.com: Sedna PCI Express (PCIe) SATA III (6G) SSD Adapter with 1 SATA III Port (with Built in Power Circuit, no Need SATA Power Connector, Best for Mac), SSD not Included :
WD BLACK SN750 500GB Internal Gaming SSD PCIe Gen 3 x4 NVMe WDBRPG5000ANC-WRSN - Best Buy