Is it possible to increase the number of available PCI slots on my computer?
Answer: Unfortunately, you can't increase the number of PCI slots inside your computer. The only option you have, other than buying another computer, is to get a PCI tower, which has multiple PCI slots. The tower connects to any PCI slot on your computer's motherboard. (For example, it could turn one slot into six.) However, these are typically only used by people that do high-end video editing, and they are pretty expensive.