diff --git a/voltha/adapters/openolt/openolt.py b/voltha/adapters/openolt/openolt.py
index 239cc2a..7ccec65 100644
--- a/voltha/adapters/openolt/openolt.py
+++ b/voltha/adapters/openolt/openolt.py
@@ -29,11 +29,26 @@
 from voltha.protos.common_pb2 import OperationResp
 from voltha.protos.device_pb2 import DeviceType, DeviceTypes
 from voltha.registry import registry
+from voltha.adapters.openolt.openolt_flow_mgr import OpenOltFlowMgr
+from voltha.adapters.openolt.openolt_alarms import OpenOltAlarmMgr
+from voltha.adapters.openolt.openolt_statistics import OpenOltStatisticsMgr
+from voltha.adapters.openolt.openolt_bw import OpenOltBW
+from voltha.adapters.openolt.openolt_platform import OpenOltPlatform
 
 _ = third_party
 log = structlog.get_logger()
 
 
+OpenOltDefaults = {
+    'support_classes': {
+        'platform': OpenOltPlatform,
+        'flow_mgr': OpenOltFlowMgr,
+        'alarm_mgr': OpenOltAlarmMgr,
+        'stats_mgr': OpenOltStatisticsMgr,
+        'bw_mgr': OpenOltBW
+    }
+}
+
 @implementer(IAdapterInterface)
 class OpenoltAdapter(object):
     name = 'openolt'
@@ -88,7 +103,9 @@
 
     def adopt_device(self, device):
         log.info('adopt-device', device=device)
+
         kwargs = {
+            'support_classes': OpenOltDefaults['support_classes'],
             'adapter_agent': self.adapter_agent,
             'device': device,
             'device_num': self.num_devices + 1