What Does PCIe x16 Mean?

The physical size literally determines the size of the slot on the motherboard You can physically plug a xN card into a xM slot if N=M The electrical

PCIe x1: These are the smallest PCIe slots, used for almost any other cards like average network adapters and USB expansion cards · PCIe x4:

pcie x32 slot The width of a PCIe connector is mm, while the height is mm, and the length is variable The 'minor' half of the connector is mm

pcie m2 slot 4 x 8 lane PCIe cards; 8 x 4 lane PCIe cards (well you won't have enough PCI slots for that, as you need at least one for the Graphics