OWC U2 Shuttle - Four NVMe M.2 SSD to U.2 Adapter at MacSales.com
U.2 SFF-8639 NVMe SSD to M.2 NGFF PCI-e Adapter with Cable
U.2 SFF-8639 NVMe SSD to PCI-e 4X Adapter - Walmart.com
SFF-8639 (U.2) to PCI-E 3.0 4X Ribbon Extender Cable for U.2 NVME SSD | eBay
MAIWO K108U U.2 NVMe Docking Station Converter USB 3.2 Type-C Gen 2 to 2.5 inch U.2 PCIe NVME SSD Portable External Hard Drive Enclosure Adapter 10Gbps high-speed - Newegg.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 -
OWC U.2 NVMe Interchange System for the Mercury OWCHELIOS3STRY
DiLiVing PCIe NVMe SSD Adapter with U.2 (SFF-8639) Interface for 2.5" NVMe SSD(PEX4SFF8639)