diff --git a/api/src/opentrons/drivers/rpi_drivers/interfaces.py b/api/src/opentrons/drivers/rpi_drivers/interfaces.py
index 3923b250a27..d52288ae2d4 100644
--- a/api/src/opentrons/drivers/rpi_drivers/interfaces.py
+++ b/api/src/opentrons/drivers/rpi_drivers/interfaces.py
@@ -1,12 +1,15 @@
-from typing import List
+from typing import List, Union
 from typing_extensions import Protocol
 
-from opentrons.hardware_control.modules.types import ModuleAtPort
+from opentrons.hardware_control.modules.types import (
+    ModuleAtPort,
+    SimulatingModuleAtPort,
+)
 
 
 class USBDriverInterface(Protocol):
     def match_virtual_ports(
         self,
-        virtual_port: List[ModuleAtPort],
+        virtual_port: Union[List[ModuleAtPort], List[SimulatingModuleAtPort]],
     ) -> List[ModuleAtPort]:
         ...
diff --git a/api/src/opentrons/drivers/rpi_drivers/usb_simulator.py b/api/src/opentrons/drivers/rpi_drivers/usb_simulator.py
index d3931c00fdd..8dc06207e46 100644
--- a/api/src/opentrons/drivers/rpi_drivers/usb_simulator.py
+++ b/api/src/opentrons/drivers/rpi_drivers/usb_simulator.py
@@ -4,15 +4,21 @@
 A class to convert info from the usb bus into a
 more readable format.
 """
-from typing import List
+from typing import List, Union
 
-from opentrons.hardware_control.modules.types import ModuleAtPort
+from opentrons.hardware_control.modules.types import (
+    ModuleAtPort,
+    SimulatingModuleAtPort,
+)
 
 from .interfaces import USBDriverInterface
 
 
 class USBBusSimulator(USBDriverInterface):
     def match_virtual_ports(
-        self, virtual_port: List[ModuleAtPort]
-    ) -> List[ModuleAtPort]:
+        self,
+        virtual_port: Union[
+            List[ModuleAtPort], List[SimulatingModuleAtPort]
+        ],  # should probably one use simulating
+    ) -> Union[List[ModuleAtPort], List[SimulatingModuleAtPort]]:
         return virtual_port
diff --git a/api/src/opentrons/hardware_control/modules/types.py b/api/src/opentrons/hardware_control/modules/types.py
index 1783c9c2085..7c79f5b0e30 100644
--- a/api/src/opentrons/hardware_control/modules/types.py
+++ b/api/src/opentrons/hardware_control/modules/types.py
@@ -110,12 +110,8 @@ class ModuleAtPort:
     usb_port: USBPort = USBPort(name="", port_number=0)
 
 
-@dataclass
-class SimulatingModuleAtPort:
+class SimulatingModuleAtPort(ModuleAtPort):
     serial_numer: str
-    port: str
-    name: str
-    usb_port: USBPort = USBPort(name="", port_number=0)
 
 
 class BundledFirmware(NamedTuple):