support
The Z790, a high-end model, replaces the existing Z690, and its biggest change is support for PCIe 5.0 protocol M.2 interface SSDS.
The 12th generation core processor Alder Lake-S has supported the direct PCIe 5.0 protocol, but the supporting Z690 chipset motherboard still stays in PCIe 4.0, and the new generation Z790 chipset motherboard has also introduced support for PCIe 5.0, which can be said to be further in terms of IO expansion.
The Z790 motherboard supports pcie50.
However, not all motherboards support pcie50, which means that only high-end products support PCIe 5 M.2 SSDS, and mainstream products will not support PCIe 5, because it requires more PCB layers and driver interfaces, so the cost is higher.