diff --git a/src/revpi_middleware/ios1/interface_devices.py b/src/revpi_middleware/ios1/interface_devices.py
index baae334..a937362 100644
--- a/src/revpi_middleware/ios1/interface_devices.py
+++ b/src/revpi_middleware/ios1/interface_devices.py
@@ -8,7 +8,7 @@ from pydbus.generic import signal
 from revpimodio2 import RevPiModIO
 from revpimodio2.device import Device
 
-from .ios1_helper import REVPI_DBUS_BASE_PATH
+from .ios1_helper import REVPI_DBUS_BASE_PATH, get_io_object_path
 
 
 class InterfaceDeviceManager:
@@ -56,7 +56,9 @@ class InterfaceDevice:
             <property name="catalognr" type="s" access="read"/>
             <property name="comment" type="s" access="read"/>
             <property name="id" type="s" access="read"/>
+            <property name="inp" type="ao" access="read"/>
             <property name="name" type="s" access="read"/>
+            <property name="out" type="ao" access="read"/>
             <property name="type" type="s" access="read"/>
         </interface>
     </node>
@@ -85,10 +87,18 @@ class InterfaceDevice:
     def id(self):
         return self.device.id
 
+    @property
+    def inp(self) -> list[str]:
+        return [get_io_object_path(io) for io in self.device.get_inputs()]
+
     @property
     def name(self) -> str:
         return self.device.name
 
+    @property
+    def out(self) -> list[str]:
+        return [get_io_object_path(io) for io in self.device.get_outputs()]
+
     @property
     def type(self):
         return self.device.type