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How to check if the network cable plugged into Xiaomi router is only 100Mbps? The Gigabit port was reduced to 100 Mbit. I found the crystal head from a line in the background.
When the Xiaomi router was plugged in and the network cable was plugged in, the speed was only 100 Mbit/s, and the Gigabit broadband was not fully utilized. It was probably not that the router was broken, but that the network port negotiation was suppressed to 100 Mbit/s. I'll write this down 192.168.31.1 How to check the negotiated speed on both sides of the computer network card, the three real culprits of four-core network cables and old network cards, and how to check back to Gigabit after changing the cable head. ...
