Identify a variety of PCI slots

pci slotPCIe is different from PCI. PCIe is faster and it can be used to connect devices like graphics card that PCI can't support nowadays.PCIe slots come in a variety of physically different sizes referred to by the maximum lane count they support, ie. x1, x2, x4, x8, x16, and x32. A PCIe card will fit into a slot of its size or bger,