ASRock - 【Coming soon】The new gear makes better experience: ASRock U.2 Kit is a M.2 to mini-SAS adapter for connecting some of the world's fastest U.2 PCIe Gen3 x4 SSDs! | Facebook
U.2 to PCIe Adapter for 2.5-inch U.2 NVMe SSD, SFF-8639, PCIe x4 | Eaton
Amazon.com: 3.2TB PCIe Gen3 x4 NVMe U.2 2.5" SSD for Dell PowerEdge Servers | Enterprise Solid State Drive in 14G 15G Tray Compatible in R7525 R6525 R650 R750 R750xs Rack Servers :
Disk adapter M.2 NVMe SSD to U.2 2.5" NVMe SFF-8639 SSD - Cablematic
U.2 - Wikipedia
Amazon.com: GLOTRENDS U.2 (SFF-8639) PCIe NVMe 4.0/3.0 Adapter for U.2 PCIe SSD, PCI-E GEN4 Full Speed, Desktop PC Installation : Electronics