Amazon.com: PCIe Gen3 x2 USB 3.2/3.1 Card ASM3142- PCI Express to 4-Port Type C HUB Internal Expansion Card Controller Adapter PCI Express Card Desktop PC Support Multiple INs : Electronics
Switch-based Cable Adapter, PCIe x4 Gen3 Host - One Stop Systems
What is the Difference Between PCIe Gen 3 & Gen 4?