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Network card
Product overview
A network card is a piece of computer hardware designed to allow computers to communicate over a computer network.Because it has a MAC address, it belongs to the second level of the OSI model.It allows users to connect to each other wirelessly or by cable.Each network card has a 48-bit serial number called the MAC address, which is written in a ROM on the card.Each computer on the network must have a MAC address.No two network cards produced have the same address.This is because the Institute of Electrical and Electronic Engineers (IEEE) is responsible for assigning MAC addresses to network interface controller (NIC) vendors.