m2 pcie 4.0 in 3.0 slot | m2 pcie 4.0 in 3.0 slot

Intel® 11th & 10th Gen Processors. 1 x PCIe 4.0/3.0 x16 slot*. - Intel® 11th processors support PCIe 4.0 x16. - Intel® 10th processors support PCIe 3.0 x16.

Similarly, if a PCIe 4.0 device is installed in a PCIe 3.0 slot, it will still run at PCIe 3.0 speeds. The compatibility only ensures that users can upgrade or build systems with mixed-generation components without facing compatibility issues.

You can use a PCIe 3.0 card in a PCIe 4.0 slot, but it will operate at PCIe 3.0 speeds. This ensures flexibility when upgrading components without requiring a motherboard replacement.