Intel® 13th & 12th Gen Processors
M.2_1 slot (Key M), type 2242/2260/2280/22110 (support PCIe 4.0 x4 mode)
Intel® Z790 Chipset
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4)
M.2_3 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0 x4)
M.2_4 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 & SATA modes)