Index: /trunk/src/VBox/Frontends/VirtualBox/src/settings/machine/UIMachineSettingsUSBFilterDetails.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/settings/machine/UIMachineSettingsUSBFilterDetails.cpp	(revision 64674)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/settings/machine/UIMachineSettingsUSBFilterDetails.cpp	(revision 64675)
@@ -40,5 +40,5 @@
     mLeVendorID->setValidator (new QRegExpValidator (QRegExp ("[0-9a-fA-F]{0,4}"), this));
     mLeProductID->setValidator (new QRegExpValidator (QRegExp ("[0-9a-fA-F]{0,4}"), this));
-    mLeRevision->setValidator (new QRegExpValidator (QRegExp ("[0-9]{0,4}"), this));
+    mLeRevision->setValidator (new QRegExpValidator (QRegExp ("[0-9a-fA-F]{0,4}"), this));
     mLePort->setValidator (new QRegExpValidator (QRegExp ("[0-9]*"), this));