diff --git a/essentials-framework/Essentials DM/Essentials_DM/Chassis/DmChassisController.cs b/essentials-framework/Essentials DM/Essentials_DM/Chassis/DmChassisController.cs
index 39b6c0e0..9679331e 100644
--- a/essentials-framework/Essentials DM/Essentials_DM/Chassis/DmChassisController.cs	
+++ b/essentials-framework/Essentials DM/Essentials_DM/Chassis/DmChassisController.cs	
@@ -21,8 +21,9 @@ namespace PepperDash.Essentials.DM
     /// 
     /// </summary>
     [Description("Wrapper class for all DM-MD chassis variants from 8x8 to 32x32")]
-    public class DmChassisController : CrestronGenericBridgeableBaseDevice, IDmSwitch, IRoutingNumericWithFeedback
-    {
+    public class DmChassisController : CrestronGenericBridgeableBaseDevice, IDmSwitch, IRoutingNumericWithFeedback
+    {
+        private const string NonePortKey = "inputCard0--None";
         public DMChassisPropertiesConfig PropertiesConfig { get; set; }
 
         public Switch Chassis { get; private set; }
@@ -133,7 +134,11 @@ namespace PepperDash.Essentials.DM
 
                 var controller = new DmChassisController(key, name, chassis);
 
-                //
+                //
+                var clearInputPort = new RoutingInputPort(NonePortKey, eRoutingSignalType.AudioVideo,
+                    eRoutingPortConnectionType.None, null, controller);
+
+                controller.InputPorts.Add(clearInputPort);
 
                 // add the cards and port names
                 foreach (var kvp in properties.InputSlots)