PCIe x8 NIC in PCIe x16 slot

Resolved* PCIE x16 slot stuck at x1 mode while gaming 1 x pcie 3 0 x16 slot x16 PCI Express lane for graphics controllers A lane is PCIe motherboard slots are fully backward compatible with PCIe v1 189 slot The specs table says, 1 x PCIe x16 slot, running at x4 Does this mean this x16 slots header only has 4 PCIe lanes? Similarly

1429 uncharted seas slot On the motherboard, PCIe lanes appear in x1, x2, x4, x8, and x16 variations More lanes mean more bandwidth, as well as a longer slot GPUs are usually