diff --git a/custom_components/mikrotik_router/mikrotik_controller.py b/custom_components/mikrotik_router/mikrotik_controller.py
index 5a47e7f..73a5707 100644
--- a/custom_components/mikrotik_router/mikrotik_controller.py
+++ b/custom_components/mikrotik_router/mikrotik_controller.py
@@ -536,6 +536,7 @@ class MikrotikControllerData:
                 {"name": "link-downs"},
                 {"name": "tx-queue-drop"},
                 {"name": "actual-mtu"},
+                {"name": "about", "source": ".about", "default": ""},
             ],
             ensure_vals=[
                 {"name": "client-ip-address"},
diff --git a/custom_components/mikrotik_router/switch.py b/custom_components/mikrotik_router/switch.py
index 89564b3..ac3200f 100644
--- a/custom_components/mikrotik_router/switch.py
+++ b/custom_components/mikrotik_router/switch.py
@@ -263,6 +263,9 @@ class MikrotikControllerPortSwitch(MikrotikControllerSwitch):
         """Turn on the switch."""
         path = "/interface"
         param = "default-name"
+        if self._data["about"] == "managed by CAPsMAN":
+            _LOGGER.error("Unable to enable %s, managed by CAPsMAN", self._data[param])
+            return "managed by CAPsMAN"
         if "-" in self._data["port-mac-address"]:
             param = "name"
         value = self._data[param]
@@ -280,6 +283,9 @@ class MikrotikControllerPortSwitch(MikrotikControllerSwitch):
         """Turn on the switch."""
         path = "/interface"
         param = "default-name"
+        if self._data["about"] == "managed by CAPsMAN":
+            _LOGGER.error("Unable to disable %s, managed by CAPsMAN", self._data[param])
+            return "managed by CAPsMAN"
         if "-" in self._data["port-mac-address"]:
             param = "name"
         value = self._data[param]