2 x Motherboard

This post shows you the difference between M and in the aspect of plug and slot

2 slots support only PCIe SSDs Combo SSD slots support both interfaces so you can use either a SATA SSD or a PCIe SSD with them NVMe is

slot online เว็บตรง 1 x connector , integrated in the Chipset, supporting Socket 3, M key, type 22422260228022110 SSDs: Supporting PCIe

slot moon princess fiable 2 slot supports 4X bay is wired as SATA 1 x 88DJK - Thermal pad 1 x 4270E