diff --git a/Makefile b/Makefile
index 09e8724..0abff86 100644
--- a/Makefile
+++ b/Makefile
@@ -15,8 +15,8 @@ DISABLE_MSC   := 0
 CDC_LOOPBACK_TEST := 0
 
 include User/gex.mk
-#GEX_PLAT=F072_HUB
-GEX_PLAT=F072_DISCOVERY
+GEX_PLAT=F072_HUB
+#GEX_PLAT=F072_DISCOVERY
 
 ######################################
 # target
diff --git a/User b/User
index 1797f17..a66c453 160000
--- a/User
+++ b/User
@@ -1 +1 @@
-Subproject commit 1797f179b4dbdaeb3cb54e30569417c1d8ff44b9
+Subproject commit a66c4538209a93fcc0d4ae0cc94aae51741fb657