diff --git a/src/atelierui.rc b/src/atelierui.rc
--- a/src/atelierui.rc
+++ b/src/atelierui.rc
@@ -8,27 +8,24 @@
 
     <MenuBar>
         <Menu name="file" >
+            <Action name="new_instance"/>
             <Action name="open_gcode"/>
             <Action name="quit" />
         </Menu>
         <Menu name="view">
             <Action name="3d"/>
             <Action name="gcode"/>
             <Action name="video"/>
         </Menu>
-        <Menu name="run">
-            <text>Run</text>
-            <Action name="connect"/>
-        </Menu>
         <Menu name="settings">
             <Action name="profiles"/>
         </Menu>
     </MenuBar>
 
     <ToolBar name="mainToolBar" >
         <Action name="open_gcode"/>
         <Action name="profiles"/>
-        <Action name="connect"/>
+        <Action name="new_instance"/>
         <Separator/>
     </ToolBar>
 </gui>
diff --git a/src/dialogs/CMakeLists.txt b/src/dialogs/CMakeLists.txt
--- a/src/dialogs/CMakeLists.txt
+++ b/src/dialogs/CMakeLists.txt
@@ -1,6 +1,5 @@
 set(dialogs_SRCS
     profilesdialog.cpp
-    connectsettingsdialog.cpp
     choosefiledialog.cpp
     )
 add_library(AtelierDialogs STATIC ${dialogs_SRCS})
diff --git a/src/dialogs/connectsettingsdialog.h b/src/dialogs/connectsettingsdialog.h
deleted file mode 100644
--- a/src/dialogs/connectsettingsdialog.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/* Atelier KDE Printer Host for 3D Printing
-    Copyright (C) <2016>
-    Author: Lays Rodrigues - laysrodrigues@gmail.com
-            Chris Rizzitello - rizzitello@kde.org
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-#pragma once
-
-#include <AtCore/atcore.h>
-#include <QComboBox>
-#include <QDialog>
-#include <QDialogButtonBox>
-#include <QSettings>
-
-class ConnectSettingsDialog : public QDialog
-{
-    Q_OBJECT
-
-public:
-    explicit ConnectSettingsDialog(QWidget *parent = nullptr);
-
-private:
-    void initDisplay();
-    void initData();
-    void updateSerialPort(const QStringList &ports);
-    AtCore *atcore;
-    QSettings settings;
-    QMap<QString, QVariant> profileData();
-    void accept();
-    QComboBox *serialPortCB;
-    QComboBox *deviceProfileCB;
-    QDialogButtonBox *buttonBox;
-signals:
-    void startConnection(const QString port, const QMap<QString, QVariant> data);
-};
diff --git a/src/dialogs/connectsettingsdialog.cpp b/src/dialogs/connectsettingsdialog.cpp
deleted file mode 100644
--- a/src/dialogs/connectsettingsdialog.cpp
+++ /dev/null
@@ -1,111 +0,0 @@
-/* Atelier KDE Printer Host for 3D Printing
-    Copyright (C) <2016>
-    Author: Lays Rodrigues - laysrodrigues@gmail.com
-            Chris Rizzitello - rizzitello@kde.org
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-#include "connectsettingsdialog.h"
-#include <QCloseEvent>
-#include <KLocalizedString>
-#include <QLabel>
-#include <QLayout>
-#include <QMessageBox>
-
-ConnectSettingsDialog::ConnectSettingsDialog(QWidget *parent) :
-    QDialog(parent),
-    atcore(new AtCore)
-{
-    initDisplay();
-    initData();
-    setWindowTitle(i18n("Connect to Printer"));
-    atcore->setSerialTimerInterval(100);
-    connect(atcore, &AtCore::portsChanged, this, &ConnectSettingsDialog::updateSerialPort);
-    connect(buttonBox, &QDialogButtonBox::accepted, this, &ConnectSettingsDialog::accept);
-    connect(buttonBox, &QDialogButtonBox::rejected, this, &ConnectSettingsDialog::close);
-}
-
-void ConnectSettingsDialog::initDisplay()
-{
-    serialPortCB = new QComboBox;
-    serialPortCB->setEditable(true);
-    QLabel *deviceLabel = new QLabel(i18n("Device"));
-    QHBoxLayout *deviceLayout = new QHBoxLayout;
-    deviceLayout->addWidget(deviceLabel);
-    deviceLayout->addWidget(serialPortCB);
-
-    deviceProfileCB = new QComboBox;
-    QHBoxLayout *profileLayout = new QHBoxLayout;
-    QLabel *profileLabel = new QLabel(i18n("Profile"));
-    profileLayout->addWidget(profileLabel);
-    profileLayout->addWidget(deviceProfileCB);
-
-    buttonBox = new QDialogButtonBox();
-    buttonBox->addButton(i18n("Connect"),QDialogButtonBox::AcceptRole);
-    buttonBox->addButton(QDialogButtonBox::Cancel);
-
-    QVBoxLayout *mainLayout = new QVBoxLayout;
-    mainLayout->addLayout(deviceLayout);
-    mainLayout->addLayout(profileLayout);
-    mainLayout->addWidget(buttonBox);
-
-    setLayout(mainLayout);
-}
-
-void ConnectSettingsDialog::initData()
-{
-    settings.beginGroup("GeneralSettings");
-    QStringList profiles = settings.childGroups();
-    settings.endGroup();
-    deviceProfileCB->addItems(profiles);
-}
-
-void ConnectSettingsDialog::updateSerialPort(const QStringList &ports)
-{
-    serialPortCB->clear();
-    if(!ports.isEmpty()) {
-        serialPortCB->addItems(ports);
-    }
-}
-
-QMap<QString, QVariant> ConnectSettingsDialog::profileData()
-{
-    QString profile = deviceProfileCB->currentText();
-    settings.beginGroup("GeneralSettings");
-    settings.beginGroup(profile);
-    QMap<QString, QVariant> data;
-    data["bps"] = settings.value(QStringLiteral("bps"), QStringLiteral("115200"));
-    data["bedTemp"] = settings.value(QStringLiteral("maximumTemperatureBed"), QStringLiteral("0"));
-    data["hotendTemp"] = settings.value(QStringLiteral("maximumTemperatureExtruder"), QStringLiteral("0"));
-    data["firmware"] = settings.value(QStringLiteral("firmware"),QStringLiteral("Auto-Detect"));
-    data["postPause"] = settings.value(QStringLiteral("postPause"),QStringLiteral(""));
-    data["name"] = profile;
-    settings.endGroup();
-    settings.endGroup();
-    return data;
-}
-
-void ConnectSettingsDialog::accept()
-{
-    if (deviceProfileCB->currentText().isEmpty()) {
-        QMessageBox::critical(this, i18n("Error"), i18n("Please, create a profile to connect on Settings!"));
-        return;
-    }
-    if (serialPortCB->currentText().isEmpty()) {
-        QMessageBox::critical(this, i18n("Error"), i18n("Please, connect a serial device to continue!"));
-        return;
-    }
-    emit startConnection(serialPortCB->currentText(), profileData());
-    close();
-}
diff --git a/src/mainwindow.h b/src/mainwindow.h
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -60,11 +60,13 @@
     QTabWidget *m_instances;
 
     void setupLateralArea();
+    void newAtCoreInstance();
     void initWidgets();
     void setupActions();
     void openFile();
-    void newConnection(const QString& port, const QMap<QString, QVariant>& profile);
+    void atCoreInstanceNameChange(const QString &name);
 
 signals:
     void extruderCountChanged(int count);
+    void profilesChanged();
 };
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -18,7 +18,6 @@
 */
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
-#include <dialogs/connectsettingsdialog.h>
 #include <dialogs/profilesdialog.h>
 #include <KLocalizedString>
 #include <KStandardAction>
@@ -44,6 +43,16 @@
     ui->setupUi(this);
     initWidgets();
     setupActions();
+    connect(m_instances, &QTabWidget::tabCloseRequested, [this] (int index){
+        QWidget *tempWidget= m_instances->widget(index);
+        delete tempWidget;
+
+        if(m_instances->count() == 1) {
+            m_instances->setTabsClosable(false);
+            m_instances->setMovable(false);
+        }
+    });
+
 }
 
 MainWindow::~MainWindow()
@@ -53,10 +62,9 @@
 
 void MainWindow::initWidgets()
 {
-    auto newInstanceWidget = new AtCoreInstanceWidget();
-    m_instances->addTab(newInstanceWidget, i18n("Connect your printer"));
 
     setupLateralArea();
+    newAtCoreInstance();
 
     // View:
     // Sidebar, Sidevar Controls, Printer Tabs.
@@ -69,13 +77,25 @@
     centralLayout->addWidget(splitter);
     ui->centralwidget->setLayout(centralLayout);
 }
-
+void MainWindow::newAtCoreInstance()
+{
+    auto newInstanceWidget = new AtCoreInstanceWidget();
+    QString name = QString::number(m_instances->addTab(newInstanceWidget, i18n("Connect a printer")));
+    newInstanceWidget->setObjectName(name);
+    connect(this, &MainWindow::profilesChanged, newInstanceWidget, &AtCoreInstanceWidget::updateProfileData);
+    connect(newInstanceWidget, &AtCoreInstanceWidget::connectionChanged, this, &MainWindow::atCoreInstanceNameChange);
+
+    if(m_instances->count() > 1) {
+        m_instances->setTabsClosable(true);
+        m_instances->setMovable(true);
+    }
+}
 // Move to LateralArea.
 void MainWindow::setupLateralArea()
 {
     m_lateral.m_toolBar = new QWidget();
     m_lateral.m_stack = new QStackedWidget();
-    auto *buttonLayout = new QVBoxLayout();
+    auto buttonLayout = new QVBoxLayout();
 
     auto setupButton = [this, buttonLayout](const QString& key, const QString& text, const QIcon& icon, QWidget *w) {
         auto *btn = new QPushButton(m_lateral.m_toolBar);
@@ -117,21 +137,16 @@
     action->setText(i18n("&Open GCode"));
     connect(action, &QAction::triggered, this, &MainWindow::openFile);
 
-    action = actionCollection()->addAction(QStringLiteral("connect"));
-    action->setText(i18n("&Connect"));
-    connect(action, &QAction::triggered, [ & ]{
-            std::unique_ptr<ConnectSettingsDialog> csd(new ConnectSettingsDialog);
-            connect(csd.get(), &ConnectSettingsDialog::startConnection, [this](const QString& port, const QMap<QString, QVariant>& data) {
-                newConnection(port, data);
-            });
-            csd->exec();
-    });
+    action = actionCollection()->addAction(QStringLiteral("new_instance"));
+    action->setText(i18n("&New Connection"));
+    connect(action, &QAction::triggered, this, &MainWindow::newAtCoreInstance);
 
     action = actionCollection()->addAction(QStringLiteral("profiles"));
     action->setText(i18n("&Profiles"));
     connect(action, &QAction::triggered, [this] {
         std::unique_ptr<ProfilesDialog> pd(new ProfilesDialog);
         pd->exec();
+        emit(profilesChanged());
     });
 
     #ifdef Q_OS_LINUX
@@ -165,18 +180,8 @@
         }
     }
 }
-void MainWindow::newConnection(const QString& port, const QMap<QString, QVariant>& profile)
+
+void MainWindow::atCoreInstanceNameChange(const QString &name)
 {
-    const int tabs = m_instances->count();
-    if(tabs == 1){
-        auto instance = qobject_cast<AtCoreInstanceWidget*>(m_instances->currentWidget());
-        if(!instance->connected()){
-            instance->startConnection(port, profile);
-            m_instances->setTabText(m_instances->currentIndex(), profile["name"].toString());
-            return;
-        }
-    }
-    auto newInstanceWidget = new AtCoreInstanceWidget();
-    m_instances->addTab(newInstanceWidget, profile["name"].toString());
-    newInstanceWidget->startConnection(port, profile);
+    m_instances->setTabText(sender()->objectName().toInt(),name);
 }
diff --git a/src/widgets/atcoreinstancewidget.h b/src/widgets/atcoreinstancewidget.h
--- a/src/widgets/atcoreinstancewidget.h
+++ b/src/widgets/atcoreinstancewidget.h
@@ -17,12 +17,14 @@
 */
 
 #pragma once
-#include <QWidget>
-#include <QUrl>
-#include <QToolBar>
 #include <AtCore/AtCore>
+#include <QComboBox>
 #include <QList>
-
+#include <QPushButton>
+#include <QSettings>
+#include <QToolBar>
+#include <QUrl>
+#include <QWidget>
 namespace Ui
 {
 class AtCoreInstanceWidget;
@@ -49,14 +51,23 @@
     bool connected();
     void setOpenFiles(const QList<QUrl>& files);
 
+public slots:
+    void updateProfileData();
+
 private:
     Ui::AtCoreInstanceWidget* ui;
     AtCore m_core;
     QToolBar *m_mainToolBar;
+    QComboBox *m_comboPort;
+    QComboBox *m_comboProfile;
+    QPushButton *m_connectButton;
+    QToolBar *m_connectToolBar;
+    QWidget *m_connectWidget;
     QToolBar *m_toolBar;
     QMap<QString, QVariant> profileData;
     QList<QUrl> m_files;
     QAction *m_printAction;
+    QSettings m_settings;
     void initConnectsToAtCore();
     void printFile(const QUrl& fileName);
     void pausePrint();
@@ -71,7 +82,11 @@
     void buildToolbar();
     void buildMainToolbar();
     void print();
+    void updateSerialPort(const QStringList &ports);
+    void buildConnectionToolbar();
+    void connectButtonClicked();
 signals:
     void extruderCountChanged(int count);
     void disableDisconnect(bool b);
+    void connectionChanged(QString name);
 };
diff --git a/src/widgets/atcoreinstancewidget.cpp b/src/widgets/atcoreinstancewidget.cpp
--- a/src/widgets/atcoreinstancewidget.cpp
+++ b/src/widgets/atcoreinstancewidget.cpp
@@ -36,12 +36,16 @@
     ui->printProgressWidget->setVisible(false);
     buildMainToolbar();
     buildToolbar();
+    buildConnectionToolbar();
     enableControls(false);
+    updateProfileData();
     initConnectsToAtCore();
+    m_mainToolBar->setHidden(true);
 }
 
 AtCoreInstanceWidget::~AtCoreInstanceWidget()
 {
+    m_core.closeConnection();
     delete ui;
 }
 
@@ -96,13 +100,6 @@
     m_mainToolBar = new QToolBar();
     m_mainToolBar->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 
-    auto disconnectAction = new QAction(style()->standardIcon(QStyle::SP_DialogCloseButton), i18n("Disconnect"));
-    connect(this, &AtCoreInstanceWidget::disableDisconnect, disconnectAction, &QAction::setDisabled);
-    connect(disconnectAction, &QAction::triggered, [this](){
-        m_core.closeConnection();
-    });
-    m_mainToolBar->addAction(disconnectAction);
-
     m_printAction = new QAction(style()->standardIcon(QStyle::SP_MediaPlay),i18n("Print"));
     connect(m_printAction, &QAction::triggered, [ this ](){
         if(m_core.state() == AtCore::BUSY) {
@@ -130,20 +127,91 @@
     m_mainToolBar->addAction(disableMotorsAction);
 
     ui->mainToolBarLayout->addWidget(m_mainToolBar);
-    ui->mainToolBarLayout->addStretch();
 }
-void AtCoreInstanceWidget::startConnection(const QString& serialPort, const QMap<QString, QVariant>& profiles){
-    m_core.initSerial(serialPort, profiles["bps"].toInt());
-    if(m_core.state() == AtCore::CONNECTING){
-        QString fw = profiles["firmware"].toString();
-        if( fw != QString("Auto-Detect")){
-            m_core.loadFirmwarePlugin(fw);
+
+void AtCoreInstanceWidget::buildConnectionToolbar()
+{
+    m_connectToolBar = new QToolBar();
+    m_comboPort = new QComboBox;
+    m_comboPort->setEditable(true);
+    QLabel *deviceLabel = new QLabel(i18n("Device"));
+    QHBoxLayout *deviceLayout = new QHBoxLayout;
+    deviceLayout->addWidget(deviceLabel);
+    deviceLayout->addWidget(m_comboPort,100);
+
+    m_comboProfile = new QComboBox;
+    m_comboProfile->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Fixed);
+    QHBoxLayout *profileLayout = new QHBoxLayout;
+    QLabel *profileLabel = new QLabel(i18n("Profile"));
+    profileLayout->addWidget(profileLabel);
+    profileLayout->addWidget(m_comboProfile,100);
+
+    QHBoxLayout *connectLayout = new QHBoxLayout;
+    connectLayout->addLayout(deviceLayout,50);
+    connectLayout->addLayout(profileLayout,50);
+
+    m_connectWidget = new QWidget();
+    m_connectWidget->setLayout(connectLayout);
+    m_connectToolBar->addWidget(m_connectWidget);
+
+    m_connectButton = new QPushButton(i18n("Connect"));
+    m_connectButton->setSizePolicy(QSizePolicy::Fixed,QSizePolicy::Fixed);
+    connect(this, &AtCoreInstanceWidget::disableDisconnect, m_connectButton, &QPushButton::setDisabled);
+    connect(m_connectButton, &QPushButton::clicked, this, &AtCoreInstanceWidget::connectButtonClicked);
+    ui->mainToolBarLayout->addWidget(m_connectToolBar);
+    ui->mainToolBarLayout->addWidget(m_connectButton);
+
+}
+
+void AtCoreInstanceWidget::connectButtonClicked()
+{
+    if(m_core.state() == AtCore::DISCONNECTED) {
+        if (m_comboProfile->currentText().isEmpty()) {
+            QMessageBox::critical(this, i18n("Error"), i18n("Please, create a profile to connect on Settings!"));
+            return;
+        }
+
+        if (m_comboPort->currentText().isEmpty()) {
+            QMessageBox::critical(this, i18n("Error"), i18n("Please, connect a serial device to continue!"));
+            return;
+        }
+
+        //Get profile data before connecting.
+        QString profile = m_comboProfile->currentText();
+        m_settings.beginGroup("GeneralSettings");
+        m_settings.beginGroup(profile);
+        QMap<QString, QVariant> data;
+        data["bps"] = m_settings.value(QStringLiteral("bps"), QStringLiteral("115200"));
+        data["bedTemp"] = m_settings.value(QStringLiteral("maximumTemperatureBed"), QStringLiteral("0"));
+        data["hotendTemp"] = m_settings.value(QStringLiteral("maximumTemperatureExtruder"), QStringLiteral("0"));
+        data["firmware"] = m_settings.value(QStringLiteral("firmware"),QStringLiteral("Auto-Detect"));
+        data["postPause"] = m_settings.value(QStringLiteral("postPause"),QStringLiteral(""));
+        data["name"] = profile;
+        m_settings.endGroup();
+        m_settings.endGroup();
+
+        //then connect
+        m_core.initSerial(m_comboPort->currentText(), data["bps"].toInt());
+        if(m_core.state() == AtCore::CONNECTING){
+            profileData = data;
+            QString fw = profileData["firmware"].toString();
+            if( fw != QString("Auto-Detect")){
+                m_core.loadFirmwarePlugin(fw);
+            }
+            emit(connectionChanged(profileData["name"].toString()));
         }
+    } else {
+        m_core.closeConnection();
+        emit(connectionChanged(i18n("Connect a Printer")));
     }
 }
 
 void AtCoreInstanceWidget::initConnectsToAtCore()
 {
+    m_core.setSerialTimerInterval(100);
+    // Handle device changes
+    connect(&m_core, &AtCore::portsChanged, this, &AtCoreInstanceWidget::updateSerialPort);
+
     // Handle AtCore status change
     connect(&m_core, &AtCore::stateChanged, this, &AtCoreInstanceWidget::handlePrinterStatusChanged);
 
@@ -240,6 +308,10 @@
     static QString stateString;
     switch (newState) {
         case AtCore::CONNECTING: {
+            m_core.setSerialTimerInterval(0);
+            m_connectButton->setText(i18n("Disconnect"));
+            m_connectToolBar->setHidden(true);
+            m_mainToolBar->setHidden(false);
             stateString = i18n("Connecting...");
             connect(&m_core, &AtCore::receivedMessage, this, &AtCoreInstanceWidget::checkReceivedCommand);
             connect(m_core.serial(), &SerialLayer::pushedCommand, this, &AtCoreInstanceWidget::checkPushedCommands);
@@ -256,6 +328,10 @@
             disconnect(&m_core, &AtCore::receivedMessage, this, &AtCoreInstanceWidget::checkReceivedCommand);
             disconnect(m_core.serial(), &SerialLayer::pushedCommand, this, &AtCoreInstanceWidget::checkPushedCommands);
             ui->logWidget->addLog(i18n("Serial disconnected"));
+            m_core.setSerialTimerInterval(100);
+            m_connectButton->setText(i18n("Connect"));
+            m_connectToolBar->setHidden(false);
+            m_mainToolBar->setHidden(true);
             enableControls(false);
         } break;
         case AtCore::STARTPRINT: {
@@ -368,3 +444,18 @@
 {
     m_files = files;
 }
+
+void AtCoreInstanceWidget::updateSerialPort(const QStringList &ports)
+{
+    m_comboPort->clear();
+    m_comboPort->addItems(ports);
+}
+
+void AtCoreInstanceWidget::updateProfileData()
+{
+    m_settings.beginGroup("GeneralSettings");
+    QStringList profiles = m_settings.childGroups();
+    m_settings.endGroup();
+    m_comboProfile->clear();
+    m_comboProfile->addItems(profiles);
+}