Q. Where is the LAN card on the PC?

Answer

Nowadays, LAN cards are a standard component of the motherboard in most computers. That card is stuck, so to speak. Multiple LAN cards may usually be installed in a single computer. Both a wireless LAN card and a wired LAN card are included in most modern laptops. Information is processed by a computer according to its operating system and its code. In order for one device to effectively connect with another, the information must be converted into a standard protocol for transmission over the network. Network interface cards (NICs) are responsible for encoding data into packets and directing those packets to their intended destinations.