2 x SATA III 3 x M.2 M.2_1 (2260/2280) - PCIe 4.0 x4 M.2_2 (2260/2280) - PCIe 4.0 x4* M.2_3 (2260/2280) - PCIe 3.0 x4 M2_2 will run at Gen4x4 with 9000 and 7000 series CPUs, Gen4x4 with 8000 (Phoen