Network Card Configuration: In old model PCs, there was a card called NIC (Network Interface card) which can be added in the PCI slot of the motherboard. Basically, A Network Interface Card (NIC) is a computer hardware component that allows a computer to connect to a network.
This card was in the form of an add-on card which could be added to the motherboard to the extended functionality. Nowadays there is no such card in use as the network module is already integrated on the motherboard or it is called 'on board'.
There are two types of NIC (Network Interface card) one is Internal network card and another is External network card. Internal network cards are of two types. The first type uses the Peripheral Component Interconnect (PCI) connection, while the second type uses Industry Standard Architecture (ISA). The external cards are mostly inserted in the USB port of PCs or the cards which does not require a wired connection.
Internal Network Interface Card :
Installation:
Procedure:
1. Remove the screws of the computer cabin cover
2. Find an unused PCI slot to insert the NIC
3. Remove the Metal slot Protector from the cabin chassis- Note that you have to find out the exact slot protector corresponding to the PCI slot (In the above figure you can see that the unused slots are protected with Metal slot protector)
4. Insert the Network card in the slot
5. Put the screw in the side of metal slot protector
6. Put the screws back in place after placing the cabin cover properly
7. Install the software if the hardware is not plug and play (Auto detected)
8. Insert the Ethernet cable's RJ 45 jack to the socket of NIC and check the connectivity



