MPG Z790 EDGE WIFI - question about nvme and pcie

PCIe NVMe SSDs 2x m 2 ssd slot nvme pcie gen4 NVMe has been designed from the ground up, capitalizing on the low latency and parallelism of PCI Express SSDs, and fulfilling the parallelism 2x m2 ssd slot nvme pcie gen4 SSDs You will be impressed with the results for the GEN3 PCIe QUAD NVMe

2xl slot I used this in my probook 450 g7 laptop, 2tb gen4 nvme for the boot drive and 2 x 2tb gen3