U.2 SFF-8639 to M.2 PCIe I/F with 2.5 Inch 9.5mm Case - Walmart.com
U.2 - Wikipedia
U.2 SFF-8639 To NGFF M.2 M-Key PCIE SSD Adapter For Mainboard Case Enclosure | eBay
OWC U2 Shuttle for up to four NVMe M.2 SSDs in a 3.5-inch Drive
Amazon.com: NFHK SFF-8639 NVME U.2 to Combo NGFF M.2 M-Key SATA PCIe SSD Adapter for Mainboard Replace SSD 750 p3600 p3700 : Electronics
Cheap M.2 SSD to U.2 Adapter 2in1 M.2 NVMe and SATA-Bus NGFF SSD to PCI-e U. 2 SFF-8639 Adapter PCIe M2 Converter for Desktop | Joom
Amazon.com: StarTech.com M.2. PCI-e NVMe to U.2 (SFF-8639) Adapter - Not Compatible with SATA Drives or SAS Controllers - For M.2 PCIe NVMe SSDs - PCIe M.2 Drive to U.2 Host Adapter -