msi slotSlot: 1x PCI-E x16 slot 2x PCI-E x1 slot PCI_E1 Gen PCIe 4.0 supports up to x16 (From CPU) ... MSI trademarks and copyrhted materials may be used only with written permission fromI have installed the Samsung SM951 M.2 drive in my MSI SLI Plus motherboard as a boot drive. But in the MSI Guard Pro BIOS, there are a couple settings that are confusing