Amazon.com: AMPCOM M.2 M Key Nvme SSD to PCI-e 4.0 Adapter, PCI Express 4.0 X16 Card with Aluminum Case, Supports Windows 7/8/ 10, Supports 2280 : Electronics
PCIe 4.0 Quad M.2 Carrier - One Stop Systems
Quad NVMe PCIe Adapter, RIITOP 4 Port M.2 NVMe SSD to PCI-e 4.0/3.0 x16 Card with Fan for 2230/2242/2260/2280 SSD (PCI-e Bifurcation Required) - Newegg.com
World's First PCIe 4.0 M.2 NVMe SSD Announced by Gigabyte - eTeknix
Micro Connectors Low-Profile M.2 NVMe SSD to PCIe 4.0 Adapter with Heat Sink for 1U - Micro Center
4 Port M.2 NVME SSD to PCIe 4.0 X16 Adapter 4 Disk Expansion Card 4 x 32Gbps | eBay