À quoi sert le port PCIe x1 ?

microSD card slot, with support for high-speed SDR104 mode; 2 × USB PCIe x1 interface for fast peripherals (requires separate HAT or

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pcie slot bracket System Requirements: There is an available PCI Express X1 slot, while supporting PCI-E X2 X4 X8 X16 It is a 1x card that does not need a 16x PCIE slot and 2

pcie slot width 14Kensington Security Slot; NVMe SSD Slots Thumbnail 16 about product PCIe add-in cards, expansion units, and storage drives are sold