Index: /trunk/src/VBox/Frontends/VirtualBox/src/converter/UIConverterBackend.h
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/converter/UIConverterBackend.h	(revision 55139)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/converter/UIConverterBackend.h	(revision 55140)
@@ -115,4 +115,5 @@
 template<> bool canConvert<KNetworkAdapterPromiscModePolicy>();
 template<> bool canConvert<KPortMode>();
+template<> bool canConvert<KUSBControllerType>();
 template<> bool canConvert<KUSBDeviceState>();
 template<> bool canConvert<KUSBDeviceFilterAction>();
@@ -204,4 +205,5 @@
 template<> QString toString(const KNetworkAdapterPromiscModePolicy &policy);
 template<> QString toString(const KPortMode &mode);
+template<> QString toString(const KUSBControllerType &type);
 template<> QString toString(const KUSBDeviceState &state);
 template<> QString toString(const KUSBDeviceFilterAction &action);
Index: /trunk/src/VBox/Frontends/VirtualBox/src/converter/UIConverterBackendCOM.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/converter/UIConverterBackendCOM.cpp	(revision 55139)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/converter/UIConverterBackendCOM.cpp	(revision 55140)
@@ -49,4 +49,5 @@
 template<> bool canConvert<KNetworkAdapterPromiscModePolicy>() { return true; }
 template<> bool canConvert<KPortMode>() { return true; }
+template<> bool canConvert<KUSBControllerType>() { return true; }
 template<> bool canConvert<KUSBDeviceState>() { return true; }
 template<> bool canConvert<KUSBDeviceFilterAction>() { return true; }
@@ -370,4 +371,17 @@
 }
 
+/* QString <= KUSBControllerType: */
+template<> QString toString(const KUSBControllerType &type)
+{
+    switch (type)
+    {
+        case KUSBControllerType_OHCI: return QApplication::translate("VBoxGlobal", "OHCI", "USBControllerType");
+        case KUSBControllerType_EHCI: return QApplication::translate("VBoxGlobal", "EHCI", "USBControllerType");
+        case KUSBControllerType_XHCI: return QApplication::translate("VBoxGlobal", "xHCI", "USBControllerType");
+        AssertMsgFailed(("No text for %d", type)); break;
+    }
+    return QString();
+}
+
 /* QString <= KUSBDeviceState: */
 template<> QString toString(const KUSBDeviceState &state)
Index: /trunk/src/VBox/Frontends/VirtualBox/src/selector/graphics/details/UIGDetailsElements.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/selector/graphics/details/UIGDetailsElements.cpp	(revision 55139)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/selector/graphics/details/UIGDetailsElements.cpp	(revision 55140)
@@ -937,7 +937,15 @@
             if (!filters.isNull() && machine().GetUSBProxyAvailable())
             {
-                const CUSBDeviceFilters &flts = machine().GetUSBDeviceFilters();
-                if (!flts.isNull() && !machine().GetUSBControllers().isEmpty())
+                const CUSBDeviceFilters flts = machine().GetUSBDeviceFilters();
+                const CUSBControllerVector controllers = machine().GetUSBControllers();
+                if (!flts.isNull() && !controllers.isEmpty())
                 {
+                    /* USB Controllers info: */
+                    QStringList controllerList;
+                    foreach (const CUSBController &controller, controllers)
+                        controllerList << gpConverter->toString(controller.GetType());
+                    m_text << UITextTableLine(QApplication::translate("UIGDetails", "USB Controller", "details (usb)"),
+                                              controllerList.join(", "));
+                    /* USB Device Filters info: */
                     const CUSBDeviceFilterVector &coll = flts.GetDeviceFilters();
                     uint uActive = 0;