1 x PCIe 5.0 x16 (PCIE1), supports x16 mode* 1 x PCIe 3.0 x1 (PCIE2), supports x1 mode* 1 x PCIe 3.0 x16 (PCIE3), supports x2 mode* 1 x Vertical M.2 Socket (Key E), supports type 2230 WiFi/BT WiFi mo