diff --git a/appliances/cisco-7200.gns3a b/appliances/cisco-7200.gns3a
index 15528aa..5c46b0b 100644
--- a/appliances/cisco-7200.gns3a
+++ b/appliances/cisco-7200.gns3a
@@ -15,7 +15,9 @@
         "ram": 512,
         "nvram": 512,
         "startup_config": "ios_base_startup-config.txt",
-        "slot0": "C7200-IO-FE"
+        "slot0": "C7200-IO-FE",
+        "midplane": "vxr",
+        "npe": "npe-400"
     },
     "images": [
         {
diff --git a/schemas/appliance.json b/schemas/appliance.json
index 556d4a3..9d91548 100644
--- a/schemas/appliance.json
+++ b/schemas/appliance.json
@@ -166,7 +166,9 @@
             "slot3": { "$ref": "#/definitions/dynamips_slot" },
             "slot4": { "$ref": "#/definitions/dynamips_slot" },
             "slot5": { "$ref": "#/definitions/dynamips_slot" },
-            "slot6": { "$ref": "#/definitions/dynamips_slot" }
+            "slot6": { "$ref": "#/definitions/dynamips_slot" },
+            "midplane": { "enum": ["std", "vxr"] },
+            "npe": { "enum": ["npe-100", "npe-150", "npe-175", "npe-200", "npe-225", "npe-300", "npe-400", "npe-g2"] }
         },
         "additionalProperties": false,
         "required": [