What is the internet cards on the motherboard?

internet cards on a motherboard, often referred to as network interface cards (NICs), facilitate the connection of a computer to a network, enabling communication over the internet. They can be integrated directly into the motherboard or installed as separate expansion cards. These cards can support various types of connections, such as Ethernet for wired networks or Wi-Fi for wireless connectivity. Their primary function is to transmit and receive data packets between the computer and the network.