diff --git a/src/core/atcore.cpp b/src/core/atcore.cpp
--- a/src/core/atcore.cpp
+++ b/src/core/atcore.cpp
@@ -333,15 +333,18 @@
     }
     //Start a print job.
     setState(AtCore::STARTPRINT);
-    if (sdPrint) {
-        //Printing from the sd card requires us to send some M commands.
-        pushCommand(GCode::toCommand(GCode::M23, fileName));
-        d->sdCardFileName = fileName;
-        pushCommand(GCode::toCommand(GCode::M24));
-        setState(AtCore::BUSY);
-        d->sdCardPrinting = true;
-        connect(d->tempTimer, &QTimer::timeout, this, &AtCore::sdCardPrintStatus);
-        return;
+    //Only try to print from Sd if the firmware has support for sd cards
+    if (firmwarePlugin()->isSdSupported()) {
+        if (sdPrint) {
+            //Printing from the sd card requires us to send some M commands.
+            pushCommand(GCode::toCommand(GCode::M23, fileName));
+            d->sdCardFileName = fileName;
+            pushCommand(GCode::toCommand(GCode::M24));
+            setState(AtCore::BUSY);
+            d->sdCardPrinting = true;
+            connect(d->tempTimer, &QTimer::timeout, this, &AtCore::sdCardPrintStatus);
+            return;
+        }
     }
     //Process the gcode with a printThread.
     //The Thread processes the gcode without freezing the libary.
diff --git a/src/core/ifirmware.h b/src/core/ifirmware.h
--- a/src/core/ifirmware.h
+++ b/src/core/ifirmware.h
@@ -41,11 +41,18 @@
 {
     Q_OBJECT
     Q_PROPERTY(QString name READ name)
+    Q_PROPERTY(bool sdSupport READ isSdSupported)
 public:
     IFirmware();
     void init(AtCore *parent);
     ~IFirmware() override;
 
+    /**
+     * @brief Check for plugin support of sd cards.
+     * @return True if firmware plugin supports sd cards.
+     */
+    virtual bool isSdSupported() const = 0;
+
     /**
      * @brief Virtual name to be reimplemnted by Firmware plugin
      *
diff --git a/src/plugins/aprinterplugin.h b/src/plugins/aprinterplugin.h
--- a/src/plugins/aprinterplugin.h
+++ b/src/plugins/aprinterplugin.h
@@ -43,6 +43,12 @@
      */
     AprinterPlugin();
 
+    /**
+     * @brief Check for plugin support of sd cards.
+     * @return True if firmware plugin supports sd cards.
+     */
+    virtual bool isSdSupported() const override;
+
     /**
      * @brief Return Plugin name
      * @return Aprinter
diff --git a/src/plugins/aprinterplugin.cpp b/src/plugins/aprinterplugin.cpp
--- a/src/plugins/aprinterplugin.cpp
+++ b/src/plugins/aprinterplugin.cpp
@@ -35,6 +35,11 @@
     return QStringLiteral("Aprinter");
 }
 
+bool AprinterPlugin::isSdSupported() const
+{
+    return false;
+}
+
 AprinterPlugin::AprinterPlugin()
 {
     qCDebug(APRINTER_PLUGIN) << name() << " plugin loaded!";
diff --git a/src/plugins/grblplugin.h b/src/plugins/grblplugin.h
--- a/src/plugins/grblplugin.h
+++ b/src/plugins/grblplugin.h
@@ -50,15 +50,21 @@
     QString name() const override;
 
     /**
-     * @brief Grbl does not return anything on command execution
-     * @param lastMessage: last message from printer
+     * @brief sdSupport
+     * @return True if plugins supports sd cards
      */
-    void validateCommand(const QString &lastMessage) override;
+    bool isSdSupported() const override;
 
     /**
      * @brief Translate common commands to firmware specific command.
      * @param command: command to translate
      * @return firmware specific translated command
      */
     QByteArray translate(const QString &command) override;
+
+    /**
+     * @brief Grbl does not return anything on command execution
+     * @param lastMessage: last message from printer
+     */
+    void validateCommand(const QString &lastMessage) override;
 };
diff --git a/src/plugins/grblplugin.cpp b/src/plugins/grblplugin.cpp
--- a/src/plugins/grblplugin.cpp
+++ b/src/plugins/grblplugin.cpp
@@ -39,6 +39,11 @@
     qCDebug(GRBL_PLUGIN) << name() << " plugin loaded!";
 }
 
+bool GrblPlugin::isSdSupported() const
+{
+    return false;
+}
+
 void GrblPlugin::validateCommand(const QString &lastMessage)
 {
     if (lastMessage.contains(QStringLiteral("ok"))) {
diff --git a/src/plugins/marlinplugin.h b/src/plugins/marlinplugin.h
--- a/src/plugins/marlinplugin.h
+++ b/src/plugins/marlinplugin.h
@@ -43,6 +43,12 @@
      */
     MarlinPlugin();
 
+    /**
+     * @brief Check for plugin support of sd cards.
+     * @return True if firmware plugin supports sd cards.
+     */
+    virtual bool isSdSupported() const override;
+
     /**
      * @brief Return Plugin name
      * @return Marlin
diff --git a/src/plugins/marlinplugin.cpp b/src/plugins/marlinplugin.cpp
--- a/src/plugins/marlinplugin.cpp
+++ b/src/plugins/marlinplugin.cpp
@@ -35,6 +35,11 @@
     return QStringLiteral("Marlin");
 }
 
+bool MarlinPlugin::isSdSupported() const
+{
+    return true;
+}
+
 MarlinPlugin::MarlinPlugin()
 {
     qCDebug(MARLIN_PLUGIN) << name() << " plugin loaded!";
@@ -61,6 +66,14 @@
             core()->clearSdCardFileList();
             core()->setReadingSdCardList(true);
         } else if (lastMessage.contains(QStringLiteral("SD printing byte"))) {
+            if (core()->state() != AtCore::BUSY) {
+                //This should only happen if Attached to an Sd printing machine.
+                //Just tell the client were starting a job like normal.
+                //For this to work the client should check if sdCardPrintStatus()
+                //Upon the Connection to a known firmware with sdSupport
+                core()->setState(AtCore::STARTPRINT);
+                core()->setState(AtCore::BUSY);
+            }
             QString temp = lastMessage;
             temp.replace(QStringLiteral("SD printing byte"), QString());
             qlonglong total = temp.mid(temp.lastIndexOf(QChar::fromLatin1('/')) + 1, temp.length() - temp.lastIndexOf(QChar::fromLatin1('/'))).toLongLong();
diff --git a/src/plugins/repetierplugin.h b/src/plugins/repetierplugin.h
--- a/src/plugins/repetierplugin.h
+++ b/src/plugins/repetierplugin.h
@@ -43,6 +43,12 @@
      */
     RepetierPlugin();
 
+    /**
+     * @brief Check for plugin support of sd cards.
+     * @return True if firmware plugin supports sd cards.
+     */
+    virtual bool isSdSupported() const override;
+
     /**
      * @brief Return Plugin name
      * @return Repetier
diff --git a/src/plugins/repetierplugin.cpp b/src/plugins/repetierplugin.cpp
--- a/src/plugins/repetierplugin.cpp
+++ b/src/plugins/repetierplugin.cpp
@@ -35,6 +35,11 @@
     return QStringLiteral("Repetier");
 }
 
+bool RepetierPlugin::isSdSupported() const
+{
+    return true;
+}
+
 RepetierPlugin::RepetierPlugin()
 {
     qCDebug(REPETIER_PLUGIN) << name() << " plugin loaded!";
@@ -63,6 +68,18 @@
             core()->setReadingSdCardList(true);
             core()->clearSdCardFileList();
         } else if (lastMessage.contains(QStringLiteral("SD printing byte"))) {
+            if (lastMessage.contains(QStringLiteral("SD printing byte 0/0"))) {
+                //not printing a file
+                return;
+            }
+            if (core()->state() != AtCore::BUSY) {
+                //This should only happen if Attached to an Sd printing machine.
+                //Just tell the client were starting a job like normal.
+                //For this to work the client should check if sdCardPrintStatus()
+                //Upon the Connection to a known firmware with sdSupport
+                core()->setState(AtCore::STARTPRINT);
+                core()->setState(AtCore::BUSY);
+            }
             QString temp = lastMessage;
             temp.replace(QStringLiteral("SD printing byte"), QString());
             qlonglong total = temp.mid(temp.lastIndexOf(QChar::fromLatin1('/')) + 1, temp.length() - temp.lastIndexOf(QChar::fromLatin1('/'))).toLongLong();
diff --git a/src/plugins/smoothieplugin.h b/src/plugins/smoothieplugin.h
--- a/src/plugins/smoothieplugin.h
+++ b/src/plugins/smoothieplugin.h
@@ -43,6 +43,12 @@
      */
     SmoothiePlugin();
 
+    /**
+     * @brief Check for plugin support of sd cards.
+     * @return True if firmware plugin supports sd cards.
+     */
+    virtual bool isSdSupported() const override;
+
     /**
      * @brief Return Plugin name
      * @return Smoothie
diff --git a/src/plugins/smoothieplugin.cpp b/src/plugins/smoothieplugin.cpp
--- a/src/plugins/smoothieplugin.cpp
+++ b/src/plugins/smoothieplugin.cpp
@@ -35,6 +35,11 @@
     return QStringLiteral("Smoothie");
 }
 
+bool SmoothiePlugin::isSdSupported() const
+{
+    return false;
+}
+
 SmoothiePlugin::SmoothiePlugin()
 {
     qCDebug(SMOOTHIE_PLUGIN) << name() << " plugin loaded!";
diff --git a/src/plugins/sprinterplugin.h b/src/plugins/sprinterplugin.h
--- a/src/plugins/sprinterplugin.h
+++ b/src/plugins/sprinterplugin.h
@@ -43,9 +43,16 @@
      */
     SprinterPlugin();
 
+    /**
+     * @brief Check for plugin support of sd cards.
+     * @return True if firmware plugin supports sd cards.
+     */
+    virtual bool isSdSupported() const override;
+
     /**
      * @brief Return Plugin name
      * @return Sprinter
      */
     QString name() const override;
+
 };
diff --git a/src/plugins/sprinterplugin.cpp b/src/plugins/sprinterplugin.cpp
--- a/src/plugins/sprinterplugin.cpp
+++ b/src/plugins/sprinterplugin.cpp
@@ -35,6 +35,11 @@
     return QStringLiteral("Sprinter");
 }
 
+bool SprinterPlugin::isSdSupported() const
+{
+    return false;
+}
+
 SprinterPlugin::SprinterPlugin()
 {
     qCDebug(SPRINTER_PLUGIN) << name() << " plugin loaded!";
diff --git a/src/plugins/teacupplugin.h b/src/plugins/teacupplugin.h
--- a/src/plugins/teacupplugin.h
+++ b/src/plugins/teacupplugin.h
@@ -43,6 +43,12 @@
      */
     TeacupPlugin();
 
+    /**
+     * @brief Check for plugin support of sd cards.
+     * @return True if firmware plugin supports sd cards.
+     */
+    virtual bool isSdSupported() const override;
+
     /**
      * @brief Return Plugin name
      * @return Teacup
diff --git a/src/plugins/teacupplugin.cpp b/src/plugins/teacupplugin.cpp
--- a/src/plugins/teacupplugin.cpp
+++ b/src/plugins/teacupplugin.cpp
@@ -35,6 +35,11 @@
     return QStringLiteral("Teacup");
 }
 
+bool TeacupPlugin::isSdSupported() const
+{
+    return false;
+}
+
 TeacupPlugin::TeacupPlugin()
 {
     qCDebug(TEACUP_PLUGIN) << name() << " plugin loaded!";
diff --git a/testclient/mainwindow.cpp b/testclient/mainwindow.cpp
--- a/testclient/mainwindow.cpp
+++ b/testclient/mainwindow.cpp
@@ -474,6 +474,7 @@
     if (core->state() != AtCore::DISCONNECTED) {
         if (!currentText.contains(tr("Autodetect"))) {
             core->loadFirmwarePlugin(currentText);
+            sdDock->setVisible(core->firmwarePlugin()->isSdSupported());
         }
     }
 }
@@ -485,6 +486,7 @@
     case AtCore::IDLE:
         printWidget->setPrintText(tr("Print File"));
         stateString = tr("Connected to ") + core->connectedPort();
+        sdDock->setVisible(core->firmwarePlugin()->isSdSupported());
         break;
 
     case AtCore::STARTPRINT: