diff --git a/xyz/openbmc_project/Inventory/Decorator/Asset.interface.yaml b/xyz/openbmc_project/Inventory/Decorator/Asset.interface.yaml
index 9e5cecc..d71881e 100644
--- a/xyz/openbmc_project/Inventory/Decorator/Asset.interface.yaml
+++ b/xyz/openbmc_project/Inventory/Decorator/Asset.interface.yaml
@@ -22,3 +22,8 @@
       type: string
       description: >
           The model of the item.
+    - name: SubModel
+      type: string
+      description: >
+          The Sub model of the item.
+      default: ""