PCIe Gen4 x4 to U.2 Horizontal Adapter - Serial Cables
StarTech U.2 to M.2 Adapter for U.2 NVMe SSD - M.2 PCIe x4 Host Interf — Network Hardwares
Amazon.com: MZHOU U.2 PCI-E ExpansionCard, SFF-8639 to SSD Adapter Card, PCI-E 3.0 X4 SATA Adapter- High Power Self-Powered The NVME Standard Protocol Supports WIN7/8/10/32/MAC/Linux : Electronics
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 -
StarTech.com U.2 to PCIe Adapter for 2.5" U.2 NVMe SSD - SFF-8639 PCIe Adapter - x4 PCI Express 3.0 - NVMe PCIe Adapter - U.2 PCIe Card - Mount a 2.5" U.2
Amazon.com: DiLiVing PCIe NVMe SSD Adapter with U.2 (SFF-8639) Interface for 2.5" NVMe SSD(PEX4SFF8639) : Electronics
U.2 PCIE ADAPTER X4 adapters cables
StarTech.com U.2 to M.2 Adapter - for 1 x U.2 PCIe NVMe SSD - M.2 PCIe x4 Host Interface - U.2 SSD - M.2 PCIe Adapter - U.2 Drive (M2E4SFF8643) - interface adapter - SAS - M.2 Card