The chipset itself gains up to 12 lanes of PCIe 4.0, which makes for three PCIe 4.0 M.2 NVMe slots on most boards, though not all. The DMI interface has also been upgraded to the equivalent of PCIe 4.0, but retains the upgrade to eight lanes the Z590 chipset got. Rather oddly, Intel also added support for a pair of additional SATA ports for a total of eight, but as these are shared with other interfaces courtesy of Intel’s HSIO design (often called SERDES in similar implementations), most motherboards will have fewer SATA ports than eight.
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