PCIe slots are the connectors on a computer motherboard that allow different types of PCI Express cards to be inserted. A PCIe slot can hold either a PCI Express x1 card or a PCI Express x16 card.
PCIe slots are often found on motherboards designed for high-end gaming computers and on workstations that are used for graphic design, video editing, and other types of professional work.
PCIe slots allow the use of multiplexing, which allows different graphics cards, hard drives, and other devices to be connected to the computer at the same time. This eliminates the need to switch between devices when working on a project or game.
PCIe slots also offer faster data transfer rates than traditional USB ports.
PCIe slots are becoming more popular because they offer increased performance and flexibility over traditional USB ports. They are also less likely to be blocked by other devices on the motherboard, which can slow down the computer.
PCIe slots are also becoming more common because they can support newer graphics cards that require more power than traditional USB ports can provide.