What does '1 x PCIe® x16 ' mean on a motherboard

PCIe x1 slots are the smallest PCI Express slots with the lowest throughput compared to bigger PCIe slots like the PCIe x16 slots However, PCIe

For example, you can fit a PCIe x1 card in a PCIe x16 slot However, you can't do the opposite You can mount, for instance, a PCIe x1 sound

1 wedgeshaped lock slot PCI Express Expansion ; Downstream slot port PCIe x16 PCI-E SMT Type Slot Supports PCI Express Gen 4 Bandwidth ; Power connector One SATA 15pin power

1 slot casino 2 slots with x4 PCIE lanes each