diff --git a/src/mainboard/asrock/e350m1/devicetree.cb b/src/mainboard/asrock/e350m1/devicetree.cb
index bc3bd18311..43607ebb02 100644
--- a/src/mainboard/asrock/e350m1/devicetree.cb
+++ b/src/mainboard/asrock/e350m1/devicetree.cb
@@ -100,8 +100,8 @@ chip northbridge/amd/agesa_wrapper/family14/root_complex
   					device pci 14.4 on end # PCI 0x4384
 	  				device pci 14.5 on end # USB 2
 					device pci 15.0 on  end # PCIe PortA
-					device pci 15.1 on  end # PCIe PortB
-					device pci 15.2 off end # PCIe PortC
+					device pci 15.1 on  end # PCIe PortB: NIC
+					device pci 15.2 on  end # PCIe PortC: USB3
 					device pci 15.3 off end # PCIe PortD
 
 					# gpp_configuration options