How to install a Network card
Installing Network Card
1). Power down PC and remove the AC power cord and the computer case.
2). Find an available Peripheral Component Interconnect (PCI) slot on the motherboard and remove slot insert if one exists.
3). Carefully remove the network card from its static-proof plastic envelope, and slide it into the slot.
4). Seat the card in the slot firmly with gentle pressure along the length of the card, especially right about the slot itself.