The NEW U.2 SSD to PCIe X16 Adapter PCIE 4.0 to 4 Disk U.2 SFF-8639 SSD Riser Card2S is a versatile adapter converter that allows for connecting U.2 SFF-8639 SSDs to a PCI Express x16 connector. It is compatible with various brands and offers a convenient solution for utilizing multiple U.2 SSDs in a single system. With its high-quality construction and reliable performance, this adapter card enhances the functionality and speed of your computer system.