Network Settings: Speed limited to 1000baseT?

[davorrr]

Hi friends!

I have this adapter: 2.5GbE USB C to Ethernet Adapter:

2.5GbE USB C to Ethernet Adapter NBASE-T - USB and Thunderbolt Network Adapters | Networking IO Products | StarTech.com

USB 3.0 Type-C to 2.5 Gigabit Ethernet Adapter - 2.5GBASE-T - USB LAN Adapter - IEEE 802.3bz - Mac, Windows & Linux

www.startech.com

I installed the Realtek RTL 8153 driver "RTUNICv1.0.20.dmg" from the website.
And I plugged it into my Big Sur machine

But there is no 2500base option in the network settings.
It's limited to 100basetT.

Does anybody have any idea?

 

[Kgeee]

I've found that it sometimes works to delete the network interface from System Settings and re-adding it.

You can check System Information -> Ethernet and see which drivers are being used.