diff --git a/device-types/Dell/PowerVault_ME4024.yml b/device-types/Dell/PowerVault_ME4024.yml
index 28170204..caf6e1dc 100644
--- a/device-types/Dell/PowerVault_ME4024.yml
+++ b/device-types/Dell/PowerVault_ME4024.yml
@@ -13,7 +13,7 @@ module-bays:
     position: '2'
   - name: A
     label: Controller Slot A
-    position: '3'
+    position: A
   - name: B
     label: Controller Slot B
-    position: '4'
+    position: B