Speed stuck at 100Mbps on 1Gb Fibre

[GigabitHelp]

So I have been trying to fix this for the last week....- I have had 1Gb Fibre installed.- I installed a TP-Link 2.5 Gigabit PCI Express Network Adapter ( TX201 ).Issue-The speed on my Ethernet is showing 100.0Mbps.-Changed Speed and Duplex to 1.0Gbps Full Duplex.-Speed on Ethernet does NOT change from 100Mbps. (But stays at 1.0Gb within the Duplex settings)So even though it is set on Speed and Duplex to 1Gbps at the Ethernet Status the Speed is staying at 100Mbps.LayoutRouter -> Cat8 Cable -> 2.5Gb Network Adapter.I have tried 5 Different Cat8 Cables, I have tested the cables, it is NOT

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