QDA-U2MP | Use two M.2 PCIe NVMe SSD in a U.2 PCIe NVMe SSD drive bay for PC and NAS | QNAP (US)
IO Crest M.2 PCIe I/F NVMe SSD to U.2 2.5-Inch SSD Adapter with Cable 2.5" SI-ADA40123 - Newegg.com
2.5-inch U.2 NVMe drive to PCI Express x16 Slot card or SATA III SSD/HDD PCI Mount
Amazon.com: M.2 NVME SSD to U.2 SFF-8639 Adapter 2 in 1, Turn M.2 NVMe SSD or M.2 SATA SSD into 2.5 inch Drive for U.2 (SFF-8639) Host Interface (U202) : Electronics