PCI-e Gen 3 8-Lane to M.2 NVMe SSD x 2 Dual Port Adapter with Heat Sink 646791004171 | eBay
PCI Express Gen 3 Carrier Board for 4 M.2 PCIe SSD modules | Amfeltec Corporation
Iocrest Pcie To U.2 Sff-8643 Gen 3 /4 -lane Card For 2.5" Nvme Ssd With Mini-sas (sff-8643) To U.2 (sff-8639) Cable For Mining - Add On Cards & Controller Panels - AliExpress