OWC MISADPU2PCIE2 2.5-inch U.2 SSD to PCIe Adapter at MacSales.com
Adapter, U.2 to PCIe - 2.5' U.2 NVMe SSD - Drive Adapters and Drive Converters | StarTech.com Europe
Tripp Lite U.2 to PCIe Adapter for 2.5" NVMe U.2 Solid State (PCE-U2-PX4)
Adapter, U.2 to M.2 - 2.5” U.2 NVMe SSD - Drive Adapters and Drive Converters | StarTech.com
PCIe Gen4 x4 to U.2 Horizontal Adapter - Serial Cables
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: PCIE to U.2 Adapter Card X16 for 4 Port NVME Expansion with LED Indicator : Electronics