Index: sources/gui/GuiView.h
===================================================================
diff -u -rec7f919fdb70ff29a8de627937e4ad7008e59c1c -r86e9dfbff50cb7e16fd94c16c1c818cef3b47eac
--- sources/gui/GuiView.h	(.../GuiView.h)	(revision ec7f919fdb70ff29a8de627937e4ad7008e59c1c)
+++ sources/gui/GuiView.h	(.../GuiView.h)	(revision 86e9dfbff50cb7e16fd94c16c1c818cef3b47eac)
@@ -49,19 +49,27 @@
     PROPERTY(quint64, sdTotal       , 0     )
     PROPERTY(quint64, sdAvail       , 0     )
     PROPERTY(quint8 , sdPercent     , 0     )
-    PROPERTY(quint8 , sdIsLow       , false )
+    PROPERTY(bool   , sdIsLow       , false )
 
     // this property will be set if the sd-card space gets lower than required amount in percent that has been defined in DeviceController.
     PROPERTY(qint8  , sdTooLowPecent, -1) // -1 means the event never happened
     // disabled coco end
 
 #ifdef  BUILD_FOR_DESKTOP
-    PROPERTY(bool   , usbReady      , true  )
-    PROPERTY(bool   , usbRemoved    , false )
+    PROPERTY(bool   , usbIsReady    , true  )
+    PROPERTY(bool   , usbIsRemoved  , false )
 #else
-    PROPERTY(bool   , usbReady      , false )
-    PROPERTY(bool   , usbRemoved    , true  )
+    PROPERTY(bool   , usbIsReady    , false )
+    PROPERTY(bool   , usbIsRemoved  , true  )
 #endif
+
+    PROPERTY(quint64, usbTotal      , 0     )
+    PROPERTY(quint64, usbAvail      , 0     )
+    PROPERTY(quint8 , usbPercent    , 0     )
+    PROPERTY(bool   , usbIsLow      , false )
+
+    PROPERTY(bool   , exportRunning , false )
+
 public:
     explicit GuiView(QObject *parent = nullptr);
 
@@ -80,6 +88,8 @@
     void  onSDCardSpaceTooLow(quint8 vAvailablePercent);
     void  onSDCardSpaceChange(bool vReady, qint64 vTotal, qint64 vAvailable, quint8 vPercent);
 
+    void  onUSBSpaceChange   (bool vReady, qint64 vTotal, qint64 vAvailable, quint8 vPercent);
+
 public slots: // is public since will be used in the UI and is in the same thread.
     void  doActionTransmit(GuiActionType vAction, const QVariantList &vData); // UI => HD/DG
     void  doActionTransmit(GuiActionType vAction, const QVariant     &vData); // UI => HD/DG