🥴Win11 Ethernet speed limit

Troubleshooting Ethernet speed does not reach 1.0 Gbps

Right-Click on the Network Icon on the lower right side, then select Network and Internet settings
Choose Advanced network settings
then click on More network adapter options
In More network adapter options select yours Network Adapter by right-click and choose Properties
New windows should pop up, select Configure...
then go to Advanced
Scroll down to Speed & Duplex and open the dropdown on right side
choose 1.0 Gbps Full Duplex instead of Auto Negotiation and click on OK
Now your network should use 1.0 Gbps if equipment supports that. ( Now your can close everything. )

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