Eaton Tripp Lite Series Adattatore da U.2 a PCIe per SSD 2.5 NVMe U.2, SFF-8639, PCI

By converting a PCIe (SFF-8639) host interface, you can add terabytes (TB) of internal storage space and enhance your PC's read/write speeds. The adapter is compatible with PCIe 3.0 motherboards. It is also backward compatible with earlier 2.0 and 1.0 versions.

eBay