linux - Network Interface Card not using the correct PCI link ...
The different versions of PCI Express are both forward- and backward-compatible with each other, in the sense that you can run a PCIe 4.0 SSD in a PCIe 3.0 slot, for example.
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PCIe 4.0 SSDs can only match the speeds of a PCIe 4.0 slot, and PCIe 3.0 SSDs can't leap in data transfer rate and bandwidth to PCIe 4.0.
What Is PCIe Card? Everything You Need to Know About PCI Express ...
What is PCI express card? How many types of PCIe cards are there? What does PCIe x8, or PCIe x16 mean? Can I use a PCIe 3.0 card in a 2.0 slot?
MAINBOARD ASUS PRIME Z690-P D4
Can I Use a PCIe 4.0 Graphics Card in a PCIe 3.0 Motherboard Slot?