diff --git a/resources/qml/MonitorButton.qml b/resources/qml/MonitorButton.qml
index 6ea9ba482f..4be04b1eab 100644
--- a/resources/qml/MonitorButton.qml
+++ b/resources/qml/MonitorButton.qml
@@ -15,13 +15,14 @@ Rectangle
     UM.I18nCatalog { id: catalog; name:"cura"}
 
     property bool printerConnected: Cura.MachineManager.printerOutputDevices.length != 0
+    property bool printerAcceptsCommands: printerConnected && Cura.MachineManager.printerOutputDevices[0].acceptsCommands
     property real progress: printerConnected ? Cura.MachineManager.printerOutputDevices[0].progress : 0
     property int backendState: UM.Backend.state
 
     property variant statusColor:
     {
-        if(!printerConnected)
-            return UM.Theme.getColor("status_offline");
+        if(!printerConnected || !printerAcceptsCommands)
+            return UM.Theme.getColor("text");
 
         switch(Cura.MachineManager.printerOutputDevices[0].jobState)
         {
@@ -49,7 +50,9 @@ Rectangle
     property string statusText:
     {
         if(!printerConnected)
-            return catalog.i18nc("@label:MonitorStatus", "Not connected to a printer")
+            return catalog.i18nc("@label:MonitorStatus", "Not connected to a printer");
+        if(!printerAcceptsCommands)
+            return catalog.i18nc("@label:MonitorStatus", "Printer does not accept commands");
 
         var printerOutputDevice = Cura.MachineManager.printerOutputDevices[0]
         switch(printerOutputDevice.jobState)
@@ -253,7 +256,7 @@ Rectangle
                             return UM.Theme.getColor("action_button_text");
                     }
                     font: UM.Theme.getFont("action_button")
-                    text: control.text;
+                    text: control.text
                 }
             }
         label: Item { }
diff --git a/resources/qml/Sidebar.qml b/resources/qml/Sidebar.qml
index 8e2c571a3e..aa51fcfefe 100644
--- a/resources/qml/Sidebar.qml
+++ b/resources/qml/Sidebar.qml
@@ -108,19 +108,28 @@ Rectangle
                 onClicked: monitoringPrint = true
                 iconSource: {
                     if(!printerConnected)
-                        return UM.Theme.getIcon("tab_monitor")
-                    else if(Cura.MachineManager.printerOutputDevices[0].jobState == "printing" || Cura.MachineManager.printerOutputDevices[0].jobState == "pre_print" || Cura.MachineManager.printerOutputDevices[0].jobState == "wait_cleanup" )
-                        return UM.Theme.getIcon("tab_monitor_busy")
-                    else if(Cura.MachineManager.printerOutputDevices[0].jobState == "ready" || Cura.MachineManager.printerOutputDevices[0].jobState == "")
-                        return UM.Theme.getIcon("tab_monitor_connected")
-                    else if(Cura.MachineManager.printerOutputDevices[0].jobState == "paused")
-                        return UM.Theme.getIcon("tab_monitor_paused")
-                    else if (Cura.MachineManager.printerOutputDevices[0].jobState == "error")
-                        return UM.Theme.getIcon("tab_monitor_stopped")
-                    else if (Cura.MachineManager.printerOutputDevices[0].jobState == "offline")
-                        return UM.Theme.getIcon("tab_monitor_offline")
-                    else
-                        return UM.Theme.getIcon("tab_monitor")
+                        return UM.Theme.getIcon("tab_monitor");
+                    else if(!printerAcceptsCommands)
+                        return UM.Theme.getIcon("tab_monitor_unknown");
+
+                    switch(Cura.MachineManager.printerOutputDevices[0].jobState)
+                    {
+                        case "printing":
+                        case "pre_print":
+                        case "wait_cleanup":
+                            return UM.Theme.getIcon("tab_monitor_busy");
+                        case "ready":
+                        case "":
+                            return UM.Theme.getIcon("tab_monitor_connected")
+                        case "paused":
+                            return UM.Theme.getIcon("tab_monitor_paused")
+                        case "error":
+                            return UM.Theme.getIcon("tab_monitor_stopped")
+                        case "offline":
+                            return UM.Theme.getIcon("tab_monitor_offline")
+                        default:
+                            return UM.Theme.getIcon("tab_monitor")
+                    }
                 }
                 checkable: true
                 checked: monitoringPrint
diff --git a/resources/themes/cura/icons/tab_monitor_unknown.svg b/resources/themes/cura/icons/tab_monitor_unknown.svg
new file mode 100644
index 0000000000..cf95b28ab3
--- /dev/null
+++ b/resources/themes/cura/icons/tab_monitor_unknown.svg
@@ -0,0 +1,97 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:sketch="http://www.bohemiancoding.com/sketch/ns"
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="30"
+   height="30"
+   viewBox="0 0 30 30"
+   version="1.1"
+   id="svg2"
+   inkscape:version="0.91 r13725"
+   sodipodi:docname="tab_monitor_unavailable.svg">
+  <metadata
+     id="metadata15">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title>Fill 1 Copy 3</dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <sodipodi:namedview
+     pagecolor="#000000"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1920"
+     inkscape:window-height="1148"
+     id="namedview13"
+     showgrid="false"
+     showborder="true"
+     inkscape:zoom="12.987195"
+     inkscape:cx="14.346643"
+     inkscape:cy="15.151358"
+     inkscape:window-x="-8"
+     inkscape:window-y="-8"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg2"
+     inkscape:snap-global="true"
+     inkscape:object-nodes="false"
+     inkscape:snap-smooth-nodes="false"
+     inkscape:snap-midpoints="false"
+     inkscape:snap-intersection-paths="false"
+     inkscape:snap-bbox="true"
+     inkscape:snap-others="false"
+     inkscape:snap-nodes="false" />
+  <!-- Generator: Sketch 3.4.4 (17249) - http://www.bohemiancoding.com/sketch -->
+  <title
+     id="title4">Fill 1 Copy 3</title>
+  <desc
+     id="desc6">Created with Sketch.</desc>
+  <defs
+     id="defs8" />
+  <g
+     id="Page-1"
+     sketch:type="MSPage"
+     style="fill:none;fill-rule:evenodd;stroke:none;stroke-width:1"
+     transform="matrix(1.3157895,0,0,1.3157895,2.5,2.4999995)">
+    <g
+       id="HIG"
+       sketch:type="MSArtboardGroup"
+       transform="translate(-718,-2432)"
+       style="fill:#ffffff">
+      <path
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+         sketch:type="MSShapeGroup"
+         inkscape:connector-curvature="0" />
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+  <circle
+     style="fill:#7f7f7f;fill-opacity:1"
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+     cx="22.5"
+     cy="7.5"
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