1st PCIe slot is stuck at x4 native no matter what - ROG Forum

What does the X4 mean in an PCIe Gen X4 NVME drive? x4 slot Ultra Durable PCIe Slot • PCIe® Slot • Running 1* x16 6 Audio Noise PCIe x4 slot with Lower impedance CONNECTIVITY Dual NVMe PCIe x4 slot Xiaomi Poco X4 GT Specifications Xiaomi Poco X4 GT MORE PICTURES Card slot, No Internal, 128GB 8GB RAM, 256GB 8GB RAM UFS Main Camera

olympus slot online x4 gpu slot with pci express version 3 versus x16 gpu slot with pcie 4 , Tested with Radeon rx