Why does a wired home network only provide 100 Mbps, and how can I increase the speed to gigabit?

Question

Computer networks

The center of the network is the TP-Link TL-WDR3600 router, the periphery is the network cards integrated into the motherboards. All this is clearly gigabit, the lines are also separated by a 4-pair cable. And yet, when I tried to download 20 gigabytes of photo-video from my computer over the network, the speed indication showed about 11 MB / s, i.e. 100 Mbit.
Tell me what the plug is and how to raise it to gigabit.

Answer 1

To check the net speed of the network, transferring files from screw to screw is not suitable, you can rest on the bandwidth of the hard drive.
Use special utilities like iperf .
If iperf also shows 100 Mbps, then you need to look in what mode the network cards are operating, whether the forced speed limit mode is enabled on them, check the cabling for compliance with the standard.