StarTech.com x4 PCI Express to M.2 PCIe SSD Adapter - M.2 NGFF SSD (NVMe or AHCI) Adapter Card - Connect a PCIe M.2 SSD (NVMe or AHCI) to your computer through PCI
What does PCI Express 2.0 x8 mean? Is this okay for gaming? - Quora
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
Amazon.com: MZHOU NVME M.2 SSD M Key to PCI-e 3.0 x1 Host Controller Expansion Card Supports M.2 NGFF PCI-e 3.0, 2.0 or 1.0 NVME or AHCI, M-Key, 2280, 2260, 2242, 2230 Solid
PCI Express - Wikipedia
PCIe 3.0 VS 2.0: What are the differences and similarities? - EaseUS