100Mbit instead of a possible 200?

I have a problem with my internet. The problem is that the ethernet cable in the system is limited to 100Mbit. With speed and duplex I have already tried automatic and 1 GBit, nothing has changed. Then I took my laptop and the full 200Mbits are transferred there (same LAN cable, same socket)

Try to adjust the internet settings to 200MB with tcpoptimizer.exe.

https://www.filehorse.com/download-tcp-optimizer/

Can only max. Set 100

Oops, I didn't know, I have "only" 100

It could well be that your network card either only supports 100 Mbit / s or that it supports e.g. Is limited to 100 Mbit / s due to missing drivers.

Which network card do you use? If you don't have a dedicated network card, the motherboard model is important.

It shouldn't be due to the cable or other network devices such as routers or switches.

Now I have the solution and sometimes it is easier than expected: For some reason there was a small strip of paper in my LAN port from the PC, which meant that not all 8 wires could be used and only 100Mbit was possible.

Now I have the solution and sometimes it is easier than expected: For some reason there was a small strip of paper in my LAN port from the PC, which meant that not all 8 wires could be used and only 100Mbit was possible.