Computers have one or more NICs built right into a chip on the motherboard. These built-in devices are called embedded network cards or embedded network controllers. Although motherboard NICs are the most common type of network connections, you have several other options available.

USB Connectors

Most of today’s computers come with a USB port (in fact, most come with a bunch of USB ports), and you can buy NICs that plug into a USB port. The best part of a USB connection is that you don’t even have to open your computer because USB ports are external. Look for USB port connectors that look like those shown in USB image below.

USB connectors are available for all types of network cabling and wireless connections.

NIC Controller Cards

Another way to add a NIC to a computer is to install a card inside the computer, using a PCI slot (your computer has several PCI slots available for installing controllers). Follow the manufacturer’s instructions for installing the hardware and drivers.