What are PCI Slots?

A PCI slot is used to add extension cards to a machine. The PCI world is somewhat of a mess right now. There are at least TEN different types of PCI sockets in use!

* Original PCI.
* Wide PCI.
* Fast/wide PCI.
* Fast/wide 3.3-volt PCI.
* PCI-X.
* Narrow PCI-X.
* PCI-Express x1.
* PCI-Express x4.
* PCI-Express x8.
* PCI-Express x16.

Today, mainly the x16 is used for Graphic cards, and PIC is used to connect network cards.