What does the X4 mean in an PCIe Gen X4 NVME drive?

Which slot on MSI Z490 motherboard supports PCIe ? m 2 4 0 in 3 0 slot PCIe ×4; PCIe ×4; PCIe ×4; Serial ATA · USB Common 2 slots on motherboards and other devices do not support all SSD sizes m24 slot wallet Slot Version

m2 slot mainboard Drives typically use x4 PCIe Lanes This can be 4x PCIe Lanes or 4x PCIe Lanes, depending on the Motherboard What