diff --git a/src/PepperDash.Essentials.Core/Devices/DestinationListItem.cs b/src/PepperDash.Essentials.Core/Devices/DestinationListItem.cs
index c0837401..788714b7 100644
--- a/src/PepperDash.Essentials.Core/Devices/DestinationListItem.cs
+++ b/src/PepperDash.Essentials.Core/Devices/DestinationListItem.cs
@@ -113,5 +113,12 @@ namespace PepperDash.Essentials.Core
         /// </summary>
         [JsonProperty("supportsUsb")]
         public bool SupportsUsb { get; set; }
+
+        /// <summary>
+        /// The key of the destination port associated with this source item
+        /// This is used to identify the specific port on the destination device that this item refers to for advanced routing
+        /// </summary>
+        [JsonProperty("destinationPortKey")]
+        public string DestinationPortKey { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/Devices/SourceListItem.cs b/src/PepperDash.Essentials.Core/Devices/SourceListItem.cs
index 3d08a218..fe0bde9d 100644
--- a/src/PepperDash.Essentials.Core/Devices/SourceListItem.cs
+++ b/src/PepperDash.Essentials.Core/Devices/SourceListItem.cs
@@ -180,6 +180,13 @@ namespace PepperDash.Essentials.Core
         [JsonProperty("supportsUsb")]
         public bool SupportsUsb { get; set; }
 
+        /// <summary>
+        /// The key of the source port associated with this source item
+        /// This is used to identify the specific port on the source device that this item refers to for advanced routing
+        /// </summary>
+        [JsonProperty("sourcePortKey")]
+        public string SourcePortKey { get; set; }
+
 
         /// <summary>
         /// Default constructor for SourceListItem, initializes the Icon to "Blank"