Pci plays a crucial role in making that happen, it provides a suitable bandwidth for all the computer parts you want to connect. Some graphics cards use pci, but most new graphics cards connect to the agp slot. [Visit to Buy] Free Ship PCIE Turn PCIe Riser Card 1 to 4 The best type of expansion slot on your computer is pci express also written as pcie. What is pci slot in computer . This is a computer slot that allows you to insert expansion cards into your computer. You can also use other methods like referring to the specsheet if you know your motherboards model, or manually checking for inscriptions or labels on your board. If you need a new system with isa or pci slots to support your legacy hardware or legacy os, we have the solution for you. When you purchase from ram pc systems you'll get a quality product and fast service. Adding pci slots is an easy way to add more expansion cards into the motherboard. Pci, also known as peripheral component interconnect, is a...