Identify Network Interface Hardware

If you want to identify the hardware information of your network interfaces, run the following commands:

lspci | grep -i network
lspci | grep -i ethernet

For more detailed information, run the following commands:

lspci -v | grep -A 10 -i network
lspci -v | grep -A 10 -i ethernet

You can also use lshw if it's installed:

sudo lshw -class network