What Are PCIe X4 Slots For?

PCIe X4 slots are for expansion cards that require more than two lanes of PCI Express connectivity. They are typically used for high-speed devices such as graphics cards or SSDs.

PCIe is the most common form of expansion card connectivity. It is used by graphics cards, sound cards, network cards, and SSDs.

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PCIe X4 slots provide more than two lanes of PCI Express connectivity. This allows for higher data transfer rates and more bandwidth than PCIe X2 slots.

PCIe X4 slots are not as common as PCIe X16 slots. They are typically found on high-end motherboards and are used for high-speed devices such as graphics cards or SSDs.

If you need more than two lanes of PCI Express connectivity, then a PCIe X4 slot is the way to go.