The Absolute Minimum
When it comes time to expand the ports on your PC, remember these important points:
You can add just about any type of port to your system by installing a port expansion card.
To install a port expansion card, all you need is a free PCI expansion slotand a screwdriver.
An easier way to expand the number of USB ports in your system is to use an external USB hub.
You can expand the ports on a portable PC via either USB or PC Card.