B450 AORUS ELITE PCI-E 4.0
B450 AORUS ELITE PCI-E 4.0
It indicates your motherboard is compatible with PCIe 3.0, whereas your graphics card works with PCIe 4.0. The main options are either upgrade the motherboard or switch to a card that supports PCIe 4.0.
Ensure the BIOS is configured for advanced settings. It might vary by model, so check your specific Asus board documentation.