A Network Interface Card (NIC) is a crucial hardware component that enables a computer to connect to a network. It serves as the interface between the computer and the network, allowing for communication and data exchange. The NIC can be integrated into the computer’s motherboard or installed as a separate expansion card.

It typically includes a port for connecting a network cable, such as an Ethernet cable, and may also support wireless connections if it is a wireless NIC. The NIC is responsible for converting data from the computer into a format suitable for transmission over the network and vice versa.

It also handles the addressing and routing of data packets, ensuring they reach their intended destination. By facilitating network connectivity, the NIC plays a vital role in enabling computers to access shared resources, communicate with other devices, and connect to the internet.