2.5 and 5 Gb Ethernet Port Stuck At 1 Gb Speed.

[morete908]

I just got 3GB fiber internet. WiFi devices show close to 3Gb speed on speed tests. When connecting the ethernet cable to either the 2.5 and 5 Gb port on my MSI MPG X870E Carbon WiFi, my speeds are stuck at 1 Gb.
In Windows Hardware and connection properties it shows both the 2.5 and 5 Gb adapter with a maximum transmission unit of 1500 and the aggregated link speed (Receive/Transmit) at 1000 Mbps.
I am running Cat. 8 ethernet cables. All adapter drivers/BIOS are up to date.
Is there an MSI BIOS setting/toggle that I'm unaware of to open up the adapter speed from 1 Gbps to 2.5 and 5 Gbps? or is this more likely a Windows 11 issue?

 

[tfbisqui156f02d4]

This is a Windows thing. Make sure there is no power in the PC, unplug the power cord from the mains, press and hold the power button from your PC for 30 seconds. After a reboot your Ethernet should be detected with the correct speed. If not you need to also remove your Ethernet adapter in device Manager, check the box to include driver removal.
Of course you need to be directly on the 5Gbe port, no switch in-between if it's only 1 Gbps or less.

 

[MadSky]

Does the router/modem provide either 2.5 or 5 Gbps Ethernet ports?
Is the cable connected to one of those port? Most routers have a mix of 1/2.5/5/10 GB ports like this one:

 

[morete908]

This is a Windows thing. Make sure there is no power in the PC, unplug the power cord from the mains, press and hold the power button from your PC for 30 seconds. After a reboot your Ethernet should be detected with the correct speed. If not you need to also remove your Ethernet adapter in device Manager, check the box to include driver removal.
Of course you need to be directly on the 5Gbe port, no switch in-between if it's only 1 Gbps or

This is a Windows thing. Make sure there is no power in the PC, unplug the power cord from the mains, press and hold the power button from your PC for 30 seconds. After a reboot your Ethernet should be detected with the correct speed. If not you need to also remove your Ethernet adapter in device Manager, check the box to include driver removal.
Of course you need to be directly on the 5Gbe port, no switch in-between if it's only 1 Gbps or less.

Thank you so much for your reply. It is great information, and I followed all of the steps but I was still at 1Gbe. It seems to be resolved now that a second replier said to check the gateway modem ports. I'm definitely going to have a word with the installer tech that said that all of the modem ethernet ports were 10G capable. He didn't have a clue, and I shouldn't have been so naive to trust him. I appreciate it.

 

[morete908]

Does the router/modem provide either 2.5 or 5 Gbps Ethernet ports?
Is the cable connected to one of those port? Most routers have a mix of 1/2.5/5/10 GB ports like this one:

View attachment 213006

Thank you so much for your reply! That was it, and I have 3Gbe speed. I'm so used to the old cable internet routers, and I definitely would have checked that first if I was using a cable modem/router setup, but the gateway modem that was provided to me by Quantum is a specialty fiber modem.

So the installer tech that installed the system also connected the ethernet cables to the modem, and he specifically told me that any port on the modem is capable of 10Gbe. I was naive and trusted him, but after reading your reply and checking the ports I can see he didn't know what he was talking about, and he's supposed to be the "pro." I shouldn't have trusted him.

Come to find out there were actually two 1Gbe ports and one 10Gbe port for a total of three ports. I connected my Cat 8 cable to the 10Gbe port and it's running at the 3Gbe I should be getting.

I appreciate that you pointed this out as I was expecting this to be a more complicated problem than it was.

 

[MadSky]

Nice to hear that some issues can be solved without involving drivers/firmware/magic