Ms-7826 Motherboard Manual Free Access

The primary slot is a PCI Express x16 (Gen 3.0), intended for high-end graphics cards, accompanied by three PCI Express x1 slots for peripheral cards like Wi-Fi adapters or sound cards.

The manual shows no native M.2 slot. However, you can use a PCIe adapter card in the x16 slot. The manual confirms that BIOS booting from NVMe is not supported unless you modify the UEFI yourself. Use it as a storage drive only. ms-7826 motherboard manual