diff --git a/src/mainboard/ocp/monolake/devicetree.cb b/src/mainboard/ocp/monolake/devicetree.cb
index 6a8bef179e..26c95d5d67 100644
--- a/src/mainboard/ocp/monolake/devicetree.cb
+++ b/src/mainboard/ocp/monolake/devicetree.cb
@@ -4,6 +4,8 @@ chip soc/intel/fsp_broadwell_de
 	end
 	device domain 0 on
 		device pci 00.0 on end # SoC router
+		device pci 02.2 off end # IOU0 port C, 10GbE
+		device pci 02.3 off end # IOU0 port D, 10GbE
 		device pci 14.0 on end # xHCI Controller
 		device pci 19.0 on end # Gigabit LAN Controller
 		device pci 1d.0 on end # EHCI Controller