diff --git a/skel-root/hd1/etc/mdev.conf b/skel-root/hd1/etc/mdev.conf
index 9610a93c..45176f20 100644
--- a/skel-root/hd1/etc/mdev.conf
+++ b/skel-root/hd1/etc/mdev.conf
@@ -35,7 +35,8 @@ mice			root:root	0640	=input/
 mouse[0-9]+		root:root	0640	=input/
 
 # USB devices
-[0-3]-.*:1.0		root:root	0660	*/lib/mdev/usb/mdev-usb
+usbdev[0-9].[0-9]*	root:root	0660	!
+(.*)-(.*):1.0		root:root	0660	*/lib/mdev/usb/mdev-usb
 
 # Mass-storage devices
 sd[a-z][0-9]		root:root	0664	*/lib/mdev/fs/mdev-mount
diff --git a/skel-root/hd2/etc/mdev.conf b/skel-root/hd2/etc/mdev.conf
index fcb9feec..37753f17 100644
--- a/skel-root/hd2/etc/mdev.conf
+++ b/skel-root/hd2/etc/mdev.conf
@@ -35,7 +35,8 @@ mice			root:root	0640	=input/
 mouse[0-9]+		root:root	0640	=input/
 
 # USB devices
-[0-3]-.*:1.0		root:root	0660	*/lib/mdev/usb/mdev-usb
+usbdev[0-9].[0-9]*	root:root	0660	!
+(.*)-(.*):1.0		root:root	0660	*/lib/mdev/usb/mdev-usb
 
 # Mass-storage devices
 sd[a-z][0-9]		root:root	0664	*/lib/mdev/fs/mdev-mount
diff --git a/skel-root/hd5x/etc/mdev.conf b/skel-root/hd5x/etc/mdev.conf
index 7ba38618..99231718 100644
--- a/skel-root/hd5x/etc/mdev.conf
+++ b/skel-root/hd5x/etc/mdev.conf
@@ -68,8 +68,8 @@ vtuner([0-9])		root:root	0660	=misc/
 fp0			root:root	0660	=dbox/fp0
 
 # USB devices
-#usbdev.*		root:root	0660	*/lib/mdev/usb/mdev-usb
-[0-3]-.*:1.0		root:root	0660	*/lib/mdev/usb/mdev-usb
+usbdev[0-9].[0-9]*	root:root	0660	!
+(.*)-(.*):1.0		root:root	0660	*/lib/mdev/usb/mdev-usb
 
 # Mass-storage devices
 [hs]d[a-z][0-9]?	root:root	0664	*/lib/mdev/fs/mdev-mount
diff --git a/skel-root/hd6x/etc/mdev.conf b/skel-root/hd6x/etc/mdev.conf
index 7ba38618..99231718 100644
--- a/skel-root/hd6x/etc/mdev.conf
+++ b/skel-root/hd6x/etc/mdev.conf
@@ -68,8 +68,8 @@ vtuner([0-9])		root:root	0660	=misc/
 fp0			root:root	0660	=dbox/fp0
 
 # USB devices
-#usbdev.*		root:root	0660	*/lib/mdev/usb/mdev-usb
-[0-3]-.*:1.0		root:root	0660	*/lib/mdev/usb/mdev-usb
+usbdev[0-9].[0-9]*	root:root	0660	!
+(.*)-(.*):1.0		root:root	0660	*/lib/mdev/usb/mdev-usb
 
 # Mass-storage devices
 [hs]d[a-z][0-9]?	root:root	0664	*/lib/mdev/fs/mdev-mount
diff --git a/skel-root/vuduo/etc/mdev.conf b/skel-root/vuduo/etc/mdev.conf
index 11187e1a..95516988 100644
--- a/skel-root/vuduo/etc/mdev.conf
+++ b/skel-root/vuduo/etc/mdev.conf
@@ -68,8 +68,8 @@ vtuner([0-9])		root:root	0660	=misc/
 fp0			root:root	0660	=dbox/fp0
 
 # USB devices
-#usbdev.*		root:root	0660	*/lib/mdev/usb/mdev-usb
-[0-3]-.*:1.0		root:root	0660	*/lib/mdev/usb/mdev-usb
+usbdev[0-9].[0-9]*	root:root	0660	!
+(.*)-(.*):1.0		root:root	0660	*/lib/mdev/usb/mdev-usb
 
 # Mass-storage devices
 [hs]d[a-z][0-9]?	root:root	0664	*/lib/mdev/fs/mdev-mount
diff --git a/skel-root/vuplus/etc/mdev.conf b/skel-root/vuplus/etc/mdev.conf
index 7ba38618..99231718 100644
--- a/skel-root/vuplus/etc/mdev.conf
+++ b/skel-root/vuplus/etc/mdev.conf
@@ -68,8 +68,8 @@ vtuner([0-9])		root:root	0660	=misc/
 fp0			root:root	0660	=dbox/fp0
 
 # USB devices
-#usbdev.*		root:root	0660	*/lib/mdev/usb/mdev-usb
-[0-3]-.*:1.0		root:root	0660	*/lib/mdev/usb/mdev-usb
+usbdev[0-9].[0-9]*	root:root	0660	!
+(.*)-(.*):1.0		root:root	0660	*/lib/mdev/usb/mdev-usb
 
 # Mass-storage devices
 [hs]d[a-z][0-9]?	root:root	0664	*/lib/mdev/fs/mdev-mount