NIC(Network Interface Card)

Short for Network Interface Card(NIC), is also referred to as an Ethernet card and network adapter. It is an expansion card that enables a computer to connect to a network; such as a home network, or the Internet using an Ethernet cable with an RJ-45 connector.
                                            

Due to the popularity and low cost of the Ethernet standard, most new computers have a network interface build directly into the motherboard. The top image shows the SMC EZ Card 10/100 PCI network card, one of the more common examples.

The beside picture shows a PC Card, more 
specifically the SMC EZ Card 10/100 wireless 
network card; found in laptop computers that do not have onboard wireless capabilities.

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Saranghae!!! ^-^

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