These cards are called PCI cards that shows an Ethernet port to plug in a cable for networking. Presently this device is embedded directly in most the motherboards, but few desktops are requiring to be installed it as external component. It is as electronic device that crates the network between computers usually through LAN. Purchase High Quality LAN Cards at Best Price in BangladeshĪ LAN card or Network interface card also known as NIC, network card, or network interface controller.