Allocation of PCIe 4.0 lanes for devices running on PCIe 3.0 interfaces
Allocation of PCIe 4.0 lanes for devices running on PCIe 3.0 interfaces
You're asking whether adding a 2.5 Gbps NIC will work with your setup. The PCIe lanes you have—24 total, with some already used by the chipset, boot drive, and GPU—determine the available bandwidth. Since your CPU supports PCIe 4.0, it can handle higher speeds, but the chipset acts as a switch that splits the lanes. You’ll need to confirm how many lanes remain free for the NIC after accounting for the other devices. If you're unsure about the exact allocation, checking the motherboard manual or using a tool to see real-time lane usage would help. It’s not just about plugging it in; you should verify the available bandwidth before purchasing.