diff --git a/src/revpi_middleware/ios1/bus_provider_io.py b/src/revpi_middleware/ios1/bus_provider_io.py
index 46eb15f..e8523f8 100644
--- a/src/revpi_middleware/ios1/bus_provider_io.py
+++ b/src/revpi_middleware/ios1/bus_provider_io.py
@@ -36,8 +36,8 @@ class BusProviderIo(Thread):
         super().__init__()
 
         self._bus = SystemBus() if use_system_bus else SessionBus()
-        self._dc_io_interfaces = {}
         self._loop = GLib.MainLoop()
+        self._lst_io_interfaces = []
         self._modio = revpimodio2.RevPiModIO(
             procimg=picontrol_device,
             configrsc=config_rsc,
@@ -50,7 +50,7 @@ class BusProviderIo(Thread):
     def run(self):
         log.debug("enter BusProviderIo.run")
 
-        self._dc_io_interfaces.clear()
+        self._lst_io_interfaces.clear()
 
         for io in self._modio.io:
             interface = None
@@ -66,10 +66,10 @@ class BusProviderIo(Thread):
                 log.warning(f"can not create dbus interface for {io.name}: {e}")
 
             if interface is not None:
-                self._dc_io_interfaces[io.name] = interface
+                self._lst_io_interfaces.append(interface)
 
         lst_interfaces = [
-            (f"io/{io_name}", self._dc_io_interfaces[io_name]) for io_name in self._dc_io_interfaces
+            (interface.object_path, interface) for interface in self._lst_io_interfaces
         ]
         lst_interfaces += [
             (f"device/{device.position}", InterfaceDevice(self._bus, device))
@@ -79,7 +79,7 @@ class BusProviderIo(Thread):
             self._bus.publish(
                 REVPI_DBUS_NAME,
                 InterfaceDeviceManager(self._modio),
-                InterfaceIoManager(self._modio, self._dc_io_interfaces),
+                InterfaceIoManager(self._modio, self._lst_io_interfaces),
                 *lst_interfaces,
             )
         except Exception as e:
diff --git a/src/revpi_middleware/ios1/interface_ios.py b/src/revpi_middleware/ios1/interface_ios.py
index 9038c0b..f30fefe 100644
--- a/src/revpi_middleware/ios1/interface_ios.py
+++ b/src/revpi_middleware/ios1/interface_ios.py
@@ -3,12 +3,12 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 """D-Bus interfaces for IOs."""
 
-from typing import Union
+from typing import Union, List
 
 from dbus import SystemBus, SessionBus
 from gi.overrides.GLib import Variant
 from pydbus.generic import signal
-from revpimodio2 import RevPiModIO, Cycletools
+from revpimodio2 import RevPiModIO, Cycletools, INP, OUT
 from revpimodio2.io import IOBase
 
 from .ios1_helper import get_io_object_path, get_variant_type
@@ -44,6 +44,7 @@ class InterfaceInput:
         self._raw = False
         self.dbus = dbus
         self.io = io
+        self.object_path = get_io_object_path(io.name)
         try:
             self.variant_type = get_variant_type(self.io)
         except ValueError:
@@ -205,18 +206,21 @@ class InterfaceIoManager:
     interface_name = "com.revolutionpi.ios1.IoManager"
     IoChanged = signal()
 
-    def __init__(self, modio: RevPiModIO, io_interfaces: dict[str, InterfaceInput]):
-        self._dc_io_interfaces = io_interfaces
+    def __init__(
+        self,
+        modio: RevPiModIO,
+        io_interfaces: List[Union[InterfaceInput, InterfaceOutput]],
+    ):
+        self._dc_io_interfaces = {interface.name: interface for interface in io_interfaces}
         self.modio = modio
 
-        self.lst_inp = []
-        for dev in self.modio.device:
-            for io in dev.get_inputs():
-                self.lst_inp.append(get_io_object_path(io.name))
-        self.lst_out = []
-        for dev in self.modio.device:
-            for io in dev.get_outputs():
-                self.lst_out.append(get_io_object_path(io.name))
+        self.lst_inp_object_path = []
+        self.lst_out_object_path = []
+        for interface in io_interfaces:
+            if interface.io.type == INP:
+                self.lst_inp_object_path.append(interface.object_path)
+            elif interface.io.type == OUT:
+                self.lst_out_object_path.append(interface.object_path)
 
     def _modio_cycle(self, ct: Cycletools) -> None:
         for io_name in self._dc_io_interfaces:
@@ -229,14 +233,14 @@ class InterfaceIoManager:
                 )
 
     def GetAllInputs(self) -> list[str]:
-        return self.lst_inp
+        return self.lst_inp_object_path
 
     def GetAllOutputs(self) -> list[str]:
-        return self.lst_out
+        return self.lst_out_object_path
 
     def Get(self, io_name) -> str:
-        if io_name in self.modio.io:
-            return get_io_object_path(io_name)
+        if io_name in self._dc_io_interfaces:
+            return self._dc_io_interfaces[io_name].object_path
 
         raise KeyError(f"No IO with name '{io_name}' found.")