To find the model number of Network Interface Card installed in your Machine, you can use the lspci command. lspci command will list all detected PCI or PCIe hardware devices installed on your machine. So in order to find only network cards, you can run following command:

We got it using below command on our linux server

[root@localhost ~]# lspci | grep -i “Ethernet”
06:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)
06:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)

We see the ethernet card installed is  Intel Corporation 82576 Gigabit Network