Pci-e x8 M.2 2 port SSD Adapter Expansion Card Dual M-key Converter NVME Adapter

The cost per SSD is PCI-e 3.1 x4 channels, not the entire PCI-e 3.1x8. (The final speed depends on the PCI-e bandwidth of SSD and Mobo). Hardware RAID is not supported. 2x SSD mounting screws. Color: black.

eBay