diff --git a/device-types/Nevion/Virtuoso-MI-MKII.yaml b/device-types/Nevion/Virtuoso-MI-MKII.yaml
index 4c15806c..2901f6de 100644
--- a/device-types/Nevion/Virtuoso-MI-MKII.yaml
+++ b/device-types/Nevion/Virtuoso-MI-MKII.yaml
@@ -8,13 +8,14 @@ description: Nevion Virtuoso is a standards-based, virtualization-ready, softwar
   & distributed production.
 u_height: 1.0
 airflow: front-to-rear
+subdevice_role: parent
 is_full_depth: true
 interfaces:
   - name: Ethernet A
     type: 1000base-t
   - name: Ethernet B
     type: 1000base-t
-module-bays:
+device-bays:
   - name: Accelerator slot 1
     position: '1'
   - name: Accelerator slot 2