1 x PCIe 5.0 x16 (supports x16 mode) 1 x PCIe 4.0 x16 (supports x4 mode) 1 x PCIe 3.0 x16

Asrock Z790 STEEL LEGEND WIFI, Intel Z790, 1700, ATX, 4 DDR5, HDMI, DP, eDP, Wi-Fi 6E, 2.5G LAN, PCIe5, RGB, 5x M.2