diff --git a/src/PepperDash.Essentials.Devices.Common/Routing/MockRoutingMidpoint.cs b/src/PepperDash.Essentials.Devices.Common/Routing/MockRoutingMidpoint.cs
index 74853223..8a6ef2f6 100644
--- a/src/PepperDash.Essentials.Devices.Common/Routing/MockRoutingMidpoint.cs
+++ b/src/PepperDash.Essentials.Devices.Common/Routing/MockRoutingMidpoint.cs
@@ -11,14 +11,15 @@ using Serilog.Events;
 namespace PepperDash.Essentials.Devices.Common.Routing;
 
 /// <summary>
-/// A mock midpoint routing device (e.g. a matrix switcher) that implements <see cref="IRoutingMidpointWithFeedback"/>
+/// A mock midpoint routing device (e.g. a matrix switcher) that implements <see cref="IHasNamedRoutingSlots"/>
 /// without any real hardware communication. Its input and output ports are configured via
 /// <see cref="MockRoutingMidpointPropertiesConfig"/>, each with a name, signal type, and physical port
-/// (connection) type - so it can stand in for a real switching device (such as a StreamSync matrix) for
-/// development and testing of routing logic.
+/// (connection) type - so it can stand in for a real switching device (such as a DM chassis or a StreamSync
+/// matrix) for development and testing of routing logic, including named-routing-slot UI that a bare
+/// <see cref="IRoutingMidpointWithFeedback"/> device cannot support.
 /// </summary>
 [Description("A mock routing midpoint (e.g. matrix switcher) device for testing routing logic without real hardware")]
-public class MockRoutingMidpoint : EssentialsDevice, IRoutingMidpointWithFeedback
+public class MockRoutingMidpoint : EssentialsDevice, IHasNamedRoutingSlots
 {
     /// <summary>
     /// The configuration properties for this device.
@@ -37,6 +38,14 @@ public class MockRoutingMidpoint : EssentialsDevice, IRoutingMidpointWithFeedbac
     /// <inheritdoc />
     public event RouteChangedEventHandler RouteChanged;
 
+    private readonly Dictionary<string, MockRoutingOutputSlotInfo> _outputSlotsByKey = new Dictionary<string, MockRoutingOutputSlotInfo>();
+
+    /// <inheritdoc />
+    public IReadOnlyDictionary<string, IRoutingSlotInfo> InputSlots { get; private set; }
+
+    /// <inheritdoc />
+    public IReadOnlyDictionary<string, IRoutingOutputSlotInfo> OutputSlots { get; private set; }
+
     /// <summary>
     /// Initializes a new instance of the <see cref="MockRoutingMidpoint"/> class from a <see cref="DeviceConfig"/>.
     /// </summary>
@@ -56,14 +65,20 @@ public class MockRoutingMidpoint : EssentialsDevice, IRoutingMidpointWithFeedbac
     }
 
     /// <summary>
-    /// Builds the input and output ports from <see cref="PropertiesConfig"/>. Each port's Key and Selector
-    /// are both set to the configured port name, so selectors passed to <see cref="ExecuteSwitch"/> and
-    /// <see cref="ClearRoute"/> can simply be looked up by matching against the port's Selector.
+    /// Builds the input and output ports (and their <see cref="IHasNamedRoutingSlots"/> slot info) from
+    /// <see cref="PropertiesConfig"/>. Each port's Key and Selector are both set to the configured port
+    /// name, so selectors passed to <see cref="ExecuteSwitch"/> and <see cref="ClearRoute"/> can simply be
+    /// looked up by matching against the port's Selector. Slot number is the 1-based position of the port
+    /// within its input/output list.
     /// </summary>
     private void BuildPorts()
     {
         try
         {
+            var inputSlots = new Dictionary<string, IRoutingSlotInfo>();
+            var outputSlots = new Dictionary<string, IRoutingOutputSlotInfo>();
+            var slotNumber = 0;
+
             foreach (var portConfig in PropertiesConfig.InputPorts)
             {
                 if (string.IsNullOrEmpty(portConfig.Name))
@@ -74,8 +89,13 @@ public class MockRoutingMidpoint : EssentialsDevice, IRoutingMidpointWithFeedbac
 
                 var port = new RoutingInputPort(portConfig.Name, portConfig.SignalType, portConfig.PortType, portConfig.Name, this);
                 InputPorts.Add(port);
+
+                slotNumber++;
+                inputSlots[portConfig.Name] = new MockRoutingSlotInfo(
+                    portConfig.Name, portConfig.Label ?? portConfig.Name, slotNumber, portConfig.SignalType);
             }
 
+            slotNumber = 0;
             foreach (var portConfig in PropertiesConfig.OutputPorts)
             {
                 if (string.IsNullOrEmpty(portConfig.Name))
@@ -86,8 +106,17 @@ public class MockRoutingMidpoint : EssentialsDevice, IRoutingMidpointWithFeedbac
 
                 var port = new RoutingOutputPort(portConfig.Name, portConfig.SignalType, portConfig.PortType, portConfig.Name, this);
                 OutputPorts.Add(port);
+
+                slotNumber++;
+                var outputSlot = new MockRoutingOutputSlotInfo(
+                    portConfig.Name, portConfig.Label ?? portConfig.Name, slotNumber, portConfig.SignalType);
+                _outputSlotsByKey[portConfig.Name] = outputSlot;
+                outputSlots[portConfig.Name] = outputSlot;
             }
 
+            InputSlots = inputSlots;
+            OutputSlots = outputSlots;
+
             this.LogInformation("Built {inputCount} input port(s) and {outputCount} output port(s) for mock midpoint {key}",
                 InputPorts.Count, OutputPorts.Count, Key);
         }
@@ -121,6 +150,11 @@ public class MockRoutingMidpoint : EssentialsDevice, IRoutingMidpointWithFeedbac
             {
                 this.LogInformation("Clearing route to output {output} on {key}", outputPort.Key, Key);
 
+                if (_outputSlotsByKey.TryGetValue(outputPort.Key, out var clearedSlot))
+                {
+                    clearedSlot.ClearRoute(signalType);
+                }
+
                 var clearedDescriptor = new RouteSwitchDescriptor(outputPort, null);
                 RouteChanged?.Invoke(this, clearedDescriptor);
                 return;
@@ -137,6 +171,11 @@ public class MockRoutingMidpoint : EssentialsDevice, IRoutingMidpointWithFeedbac
             var descriptor = new RouteSwitchDescriptor(outputPort, inputPort);
             CurrentRoutes.Add(descriptor);
 
+            if (_outputSlotsByKey.TryGetValue(outputPort.Key, out var routedSlot))
+            {
+                routedSlot.SetRoute(signalType, inputPort.Key);
+            }
+
             this.LogInformation("Executed switch: {input} -> {output} ({signalType}) on {key}",
                 inputPort.Key, outputPort.Key, signalType, Key);
 
@@ -155,6 +194,79 @@ public class MockRoutingMidpoint : EssentialsDevice, IRoutingMidpointWithFeedbac
     }
 }
 
+/// <summary>
+/// Named routing slot info for a <see cref="MockRoutingMidpoint"/> input or output port.
+/// </summary>
+class MockRoutingSlotInfo : IRoutingSlotInfo
+{
+    /// <inheritdoc />
+    public string Key { get; }
+
+    /// <inheritdoc />
+    public string Name { get; }
+
+    /// <inheritdoc />
+    public int SlotNumber { get; }
+
+    /// <inheritdoc />
+    public eRoutingSignalType SupportedSignalTypes { get; }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="MockRoutingSlotInfo"/> class.
+    /// </summary>
+    public MockRoutingSlotInfo(string key, string name, int slotNumber, eRoutingSignalType supportedSignalTypes)
+    {
+        Key = key;
+        Name = name;
+        SlotNumber = slotNumber;
+        SupportedSignalTypes = supportedSignalTypes;
+    }
+}
+
+/// <summary>
+/// Named output routing slot info for a <see cref="MockRoutingMidpoint"/> output port, tracking the
+/// currently routed input key per signal type since the mock's flat <see cref="MockRoutingMidpoint.CurrentRoutes"/>
+/// list does not carry signal type.
+/// </summary>
+class MockRoutingOutputSlotInfo : MockRoutingSlotInfo, IRoutingOutputSlotInfo
+{
+    private readonly Dictionary<eRoutingSignalType, string> _currentRouteInputKeys = new Dictionary<eRoutingSignalType, string>();
+
+    /// <inheritdoc />
+    public IReadOnlyDictionary<eRoutingSignalType, string> CurrentRouteInputKeys => _currentRouteInputKeys;
+
+    /// <inheritdoc />
+    public event EventHandler OutputSlotChanged;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="MockRoutingOutputSlotInfo"/> class.
+    /// </summary>
+    public MockRoutingOutputSlotInfo(string key, string name, int slotNumber, eRoutingSignalType supportedSignalTypes)
+        : base(key, name, slotNumber, supportedSignalTypes)
+    {
+    }
+
+    /// <summary>
+    /// Records the input key routed to this output for the given signal type and raises <see cref="OutputSlotChanged"/>.
+    /// </summary>
+    public void SetRoute(eRoutingSignalType signalType, string inputKey)
+    {
+        _currentRouteInputKeys[signalType] = inputKey;
+        OutputSlotChanged?.Invoke(this, EventArgs.Empty);
+    }
+
+    /// <summary>
+    /// Clears the routed input key for the given signal type and raises <see cref="OutputSlotChanged"/> if it changed.
+    /// </summary>
+    public void ClearRoute(eRoutingSignalType signalType)
+    {
+        if (_currentRouteInputKeys.Remove(signalType))
+        {
+            OutputSlotChanged?.Invoke(this, EventArgs.Empty);
+        }
+    }
+}
+
 /// <summary>
 /// Factory for building <see cref="MockRoutingMidpoint"/> devices.
 /// </summary>
diff --git a/src/PepperDash.Essentials.Devices.Common/Routing/MockRoutingMidpointPropertiesConfig.cs b/src/PepperDash.Essentials.Devices.Common/Routing/MockRoutingMidpointPropertiesConfig.cs
index 7c7d4bc3..b24e31aa 100644
--- a/src/PepperDash.Essentials.Devices.Common/Routing/MockRoutingMidpointPropertiesConfig.cs
+++ b/src/PepperDash.Essentials.Devices.Common/Routing/MockRoutingMidpointPropertiesConfig.cs
@@ -50,4 +50,12 @@ public class MockRoutingMidpointPortConfig
     [JsonProperty("portType")]
     [JsonConverter(typeof(StringEnumConverter))]
     public eRoutingPortConnectionType PortType { get; set; } = eRoutingPortConnectionType.Hdmi;
+
+    /// <summary>
+    /// Optional friendly display name for this port (e.g. "Rm A Codec"), surfaced via
+    /// <see cref="IHasNamedRoutingSlots"/> for named-routing-slot UI. Defaults to <see cref="Name"/> if
+    /// not specified.
+    /// </summary>
+    [JsonProperty("label", NullValueHandling = NullValueHandling.Ignore)]
+    public string Label { get; set; }
 }