What is the difference and purpose of all the PCI slots?

Part 1 of 4

A PCIe or PCI express slot is the point of connection between your 1 Add or upgrade your dedicated graphics and sound cards

pcieslot Shop · 6 PCIe Slot PC with 1 PCI – 8th Gen Intel · 5 PCI Slots Rackmountable Computer – 8th Gen Intel · 5 PCI Slots Mid-tower Computer

pcie 40 in 30 slot DescriptionPci Express English: PCI -PCI Express -PCI Express 16 1 x PCIe x16; 2 x PCIe x1; 1 x PCI Date, 17 June 2013