If you plan to use 3 M.2 NVMe SSDs, and if you plan to use only one PCIe x16 port (for the graphics card on the PCIEX16_1 port) and do not use your PCIEX1 port, you will be able to use your 3 NVMe SSDs at their maximum speed (x4) by disabling the SATA 5 and SATA 6 ports (SATA6G_56). If you cannot afford to disable the last 2 SATA ports, you must clamp the M.2_2 port at x2 speed and thus you will be able to use the SATA 5 and SATA 6 ports.
Note : Yes, there is a difference if you use an M.2 NVMe SSD or M.2 SATA SSD : If you use the M.2_1 port for an M.2 SATA SSD, the SATA 2 port (SATA6G_2) will be disabled.
