What do Ethernet cables plug into on a desktop computer?

DVI

HDMI

NIC

VGA

NIC

Explanation:

NIC is the short form of Network interface card. It is used in computers to connect, the computers with internet. Ethernet cable is used to plug in this card to connect with internet. It has been placed in the motherboard of the computer.

So, Ethernet cable plugs into Network Interface Card (NIC). on a desktop computer for the purpose of provision of internet to the computer.