4 x SATA III 5 x M.2 M.2_1 (2280) - PCIe 5.0 x4* M.2_2 (2280) - PCIe 4.0 x4* M.2_3 (2280) - PCIe 4.0 x4* M.2_4 (2280) - PCIe 4.0 x4* M.2_5 (2280) - SATA & PCIe 3.0 x2* * M2_1 is the first priority