diff --git a/src/libslic3r/Technologies.hpp b/src/libslic3r/Technologies.hpp
index da982c49a..51d092094 100644
--- a/src/libslic3r/Technologies.hpp
+++ b/src/libslic3r/Technologies.hpp
@@ -32,13 +32,4 @@
 #define ENABLE_NONCUSTOM_DATA_VIEW_RENDERING (0 && ENABLE_1_42_0_ALPHA1)
 
 
-//====================
-// 2.0.0.alpha1 techs
-//====================
-#define ENABLE_2_0_0_ALPHA1 1
-
-// Enabled 3Dconnexion devices
-#define ENABLE_3DCONNEXION_DEVICES (1 && ENABLE_2_0_0_ALPHA1)
-
-
 #endif // _technologies_h_
diff --git a/src/slic3r/GUI/AppConfig.cpp b/src/slic3r/GUI/AppConfig.cpp
index c29fe1c3b..60f4edf47 100644
--- a/src/slic3r/GUI/AppConfig.cpp
+++ b/src/slic3r/GUI/AppConfig.cpp
@@ -271,7 +271,6 @@ void AppConfig::set_recent_projects(const std::vector<std::string>& recent_proje
     }
 }
 
-#if ENABLE_3DCONNEXION_DEVICES
 void AppConfig::set_mouse_device(const std::string& name, double translation_speed, double translation_deadzone, float rotation_speed, float rotation_deadzone)
 {
     std::string key = std::string("mouse_device:") + name;
@@ -345,7 +344,6 @@ bool AppConfig::get_mouse_device_rotation_deadzone(const std::string& name, floa
     deadzone = (float)::atof(it_val->second.c_str());
     return true;
 }
-#endif // ENABLE_3DCONNEXION_DEVICES
 
 void AppConfig::update_config_dir(const std::string &dir)
 {
diff --git a/src/slic3r/GUI/AppConfig.hpp b/src/slic3r/GUI/AppConfig.hpp
index fce0c0b39..355370450 100644
--- a/src/slic3r/GUI/AppConfig.hpp
+++ b/src/slic3r/GUI/AppConfig.hpp
@@ -131,13 +131,11 @@ public:
     std::vector<std::string> get_recent_projects() const;
     void set_recent_projects(const std::vector<std::string>& recent_projects);
 
-#if ENABLE_3DCONNEXION_DEVICES
     void set_mouse_device(const std::string& name, double translation_speed, double translation_deadzone, float rotation_speed, float rotation_deadzone);
     bool get_mouse_device_translation_speed(const std::string& name, double& speed);
     bool get_mouse_device_translation_deadzone(const std::string& name, double& deadzone);
     bool get_mouse_device_rotation_speed(const std::string& name, float& speed);
     bool get_mouse_device_rotation_deadzone(const std::string& name, float& deadzone);
-#endif // ENABLE_3DCONNEXION_DEVICES
 
 	static const std::string SECTION_FILAMENTS;
     static const std::string SECTION_MATERIALS;
diff --git a/src/slic3r/GUI/Camera.cpp b/src/slic3r/GUI/Camera.cpp
index e43b57636..9ecb5b4ad 100644
--- a/src/slic3r/GUI/Camera.cpp
+++ b/src/slic3r/GUI/Camera.cpp
@@ -85,7 +85,6 @@ void Camera::select_next_type()
 
 void Camera::set_target(const Vec3d& target)
 {
-#if ENABLE_3DCONNEXION_DEVICES
     // We may let these factors be customizable
     static const double ScaleFactor = 1.1;
     BoundingBoxf3 test_box = m_scene_box;
@@ -94,12 +93,6 @@ void Camera::set_target(const Vec3d& target)
     m_target(0) = clamp(test_box.min(0), test_box.max(0), m_target(0));
     m_target(1) = clamp(test_box.min(1), test_box.max(1), m_target(1));
     m_target(2) = clamp(test_box.min(2), test_box.max(2), m_target(2));
-#else
-    m_target = target;
-    m_target(0) = clamp(m_scene_box.min(0), m_scene_box.max(0), m_target(0));
-    m_target(1) = clamp(m_scene_box.min(1), m_scene_box.max(1), m_target(1));
-    m_target(2) = clamp(m_scene_box.min(2), m_scene_box.max(2), m_target(2));
-#endif // ENABLE_3DCONNEXION_DEVICES
 }
 
 void Camera::set_theta(float theta, bool apply_limit)
@@ -114,7 +107,6 @@ void Camera::set_theta(float theta, bool apply_limit)
     }
 }
 
-#if ENABLE_3DCONNEXION_DEVICES
 void Camera::update_zoom(double delta_zoom)
 {
     set_zoom(m_zoom / (1.0 - std::max(std::min(delta_zoom, 4.0), -4.0) * 0.1));
@@ -130,23 +122,6 @@ void Camera::set_zoom(double zoom)
     // Don't allow to zoom too close to the scene.
     m_zoom = std::min(zoom, 100.0);
 }
-#else
-void Camera::set_zoom(double zoom, const BoundingBoxf3& max_box, int canvas_w, int canvas_h)
-{
-    zoom = std::max(std::min(zoom, 4.0), -4.0) / 10.0;
-    zoom = m_zoom / (1.0 - zoom);
-
-    // Don't allow to zoom too far outside the scene.
-    double zoom_min = calc_zoom_to_bounding_box_factor(max_box, canvas_w, canvas_h);
-    if (zoom_min > 0.0)
-        zoom = std::max(zoom, zoom_min * 0.7);
-
-    // Don't allow to zoom too close to the scene.
-    zoom = std::min(zoom, 100.0);
-
-    m_zoom = zoom;
-}
-#endif // ENABLE_3DCONNEXION_DEVICES
 
 bool Camera::select_view(const std::string& direction)
 {
diff --git a/src/slic3r/GUI/Camera.hpp b/src/slic3r/GUI/Camera.hpp
index bf452833c..fae203a28 100644
--- a/src/slic3r/GUI/Camera.hpp
+++ b/src/slic3r/GUI/Camera.hpp
@@ -63,13 +63,8 @@ public:
     void set_theta(float theta, bool apply_limit);
 
     double get_zoom() const { return m_zoom; }
-#if ENABLE_3DCONNEXION_DEVICES
     void update_zoom(double delta_zoom);
     void set_zoom(double zoom);
-#else
-    void set_zoom(double zoom, const BoundingBoxf3& max_box, int canvas_w, int canvas_h);
-    void set_zoom(double zoom) { m_zoom = zoom; }
-#endif // ENABLE_3DCONNEXION_DEVICES
 
     const BoundingBoxf3& get_scene_box() const { return m_scene_box; }
     void set_scene_box(const BoundingBoxf3& box) { m_scene_box = box; }
diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index af0daef6d..8610db3fb 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -22,9 +22,7 @@
 #include "GUI_App.hpp"
 #include "GUI_ObjectList.hpp"
 #include "GUI_ObjectManipulation.hpp"
-#if ENABLE_3DCONNEXION_DEVICES
 #include "Mouse3DController.hpp"
-#endif // ENABLE_3DCONNEXION_DEVICES
 #include "I18N.hpp"
 
 #if ENABLE_RETINA_GL
@@ -1394,11 +1392,7 @@ BoundingBoxf3 GLCanvas3D::volumes_bounding_box() const
 BoundingBoxf3 GLCanvas3D::scene_bounding_box() const
 {
     BoundingBoxf3 bb = volumes_bounding_box();
-#if ENABLE_3DCONNEXION_DEVICES
     bb.merge(m_bed.get_bounding_box(true));
-#else
-    bb.merge(m_bed.get_bounding_box(false));
-#endif // ENABLE_3DCONNEXION_DEVICES
 
     if (m_config != nullptr)
     {
@@ -1546,16 +1540,11 @@ void GLCanvas3D::render()
         return;
     }
 
-#if ENABLE_3DCONNEXION_DEVICES
     const Size& cnv_size = get_canvas_size();
-#endif // ENABLE_3DCONNEXION_DEVICES
 
     if (m_camera.requires_zoom_to_bed)
     {
         zoom_to_bed();
-#if !ENABLE_3DCONNEXION_DEVICES
-        const Size& cnv_size = get_canvas_size();
-#endif // !ENABLE_3DCONNEXION_DEVICES
         _resize((unsigned int)cnv_size.get_width(), (unsigned int)cnv_size.get_height());
         m_camera.requires_zoom_to_bed = false;
     }
@@ -1646,9 +1635,7 @@ void GLCanvas3D::render()
     m_camera.debug_render();
 #endif // ENABLE_CAMERA_STATISTICS
 
-#if ENABLE_3DCONNEXION_DEVICES
     wxGetApp().plater()->get_mouse3d_controller().render_settings_dialog((unsigned int)cnv_size.get_width(), (unsigned int)cnv_size.get_height());
-#endif // ENABLE_3DCONNEXION_DEVICES
 
     wxGetApp().imgui()->render();
 
@@ -2350,17 +2337,14 @@ void GLCanvas3D::on_idle(wxIdleEvent& evt)
     m_dirty |= m_main_toolbar.update_items_state();
     m_dirty |= m_undoredo_toolbar.update_items_state();
     m_dirty |= m_view_toolbar.update_items_state();
-#if ENABLE_3DCONNEXION_DEVICES
     bool mouse3d_controller_applied = wxGetApp().plater()->get_mouse3d_controller().apply(m_camera);
     m_dirty |= mouse3d_controller_applied;
-#endif // ENABLE_3DCONNEXION_DEVICES
 
     if (!m_dirty)
         return;
 
     _refresh_if_shown_on_screen();
 
-#if ENABLE_3DCONNEXION_DEVICES
     if (m_keep_dirty || mouse3d_controller_applied)
     {
         m_dirty = true;
@@ -2368,10 +2352,6 @@ void GLCanvas3D::on_idle(wxIdleEvent& evt)
     }
     else
         m_dirty = false;
-#else
-    if (m_keep_dirty)
-        m_dirty = true;
-#endif // ENABLE_3DCONNEXION_DEVICES
 }
 
 void GLCanvas3D::on_char(wxKeyEvent& evt)
@@ -2417,7 +2397,6 @@ void GLCanvas3D::on_char(wxKeyEvent& evt)
             post_event(SimpleEvent(EVT_GLTOOLBAR_COPY));
         break;
 
-#if ENABLE_3DCONNEXION_DEVICES
 #ifdef __APPLE__
         case 'm':
         case 'M':
@@ -2430,7 +2409,6 @@ void GLCanvas3D::on_char(wxKeyEvent& evt)
                 m_dirty = true;
                 break;
             }
-#endif // ENABLE_3DCONNEXION_DEVICES
 
 #ifdef __APPLE__
         case 'v':
@@ -2499,19 +2477,11 @@ void GLCanvas3D::on_char(wxKeyEvent& evt)
         case 'B':
         case 'b': { zoom_to_bed(); break; }
         case 'I':
-#if ENABLE_3DCONNEXION_DEVICES
         case 'i': { _update_camera_zoom(1.0); break; }
-#else
-        case 'i': { set_camera_zoom(1.0); break; }
-#endif // ENABLE_3DCONNEXION_DEVICES
         case 'K':
         case 'k': { m_camera.select_next_type(); m_dirty = true; break; }
         case 'O':
-#if ENABLE_3DCONNEXION_DEVICES
         case 'o': { _update_camera_zoom(-1.0); break; }
-#else
-        case 'o': { set_camera_zoom(-1.0); break; }
-#endif // ENABLE_3DCONNEXION_DEVICES
 #if ENABLE_RENDER_PICKING_PASS
         case 'T':
         case 't': {
@@ -2614,12 +2584,10 @@ void GLCanvas3D::on_key(wxKeyEvent& evt)
 
 void GLCanvas3D::on_mouse_wheel(wxMouseEvent& evt)
 {
-#if ENABLE_3DCONNEXION_DEVICES
     // try to filter out events coming from mouse 3d 
     Mouse3DController& controller = wxGetApp().plater()->get_mouse3d_controller();
     if (controller.process_mouse_wheel())
         return;
-#endif // ENABLE_3DCONNEXION_DEVICES
 
     if (!m_initialized)
         return;
@@ -2665,11 +2633,7 @@ void GLCanvas3D::on_mouse_wheel(wxMouseEvent& evt)
         return;
 
     // Calculate the zoom delta and apply it to the current zoom factor
-#if ENABLE_3DCONNEXION_DEVICES
     _update_camera_zoom((double)evt.GetWheelRotation() / (double)evt.GetWheelDelta());
-#else
-    set_camera_zoom((double)evt.GetWheelRotation() / (double)evt.GetWheelDelta());
-#endif // ENABLE_3DCONNEXION_DEVICES
 }
 
 void GLCanvas3D::on_timer(wxTimerEvent& evt)
@@ -3451,15 +3415,6 @@ void GLCanvas3D::do_mirror(const std::string& snapshot_type)
     m_dirty = true;
 }
 
-#if !ENABLE_3DCONNEXION_DEVICES
-void GLCanvas3D::set_camera_zoom(double zoom)
-{
-    const Size& cnv_size = get_canvas_size();
-    m_camera.set_zoom(zoom, _max_bounding_box(false, true), cnv_size.get_width(), cnv_size.get_height());
-    m_dirty = true;
-}
-#endif // !ENABLE_3DCONNEXION_DEVICES
-
 void GLCanvas3D::update_gizmos_on_off_state()
 {
     set_as_dirty();
@@ -3910,10 +3865,6 @@ void GLCanvas3D::_resize(unsigned int w, unsigned int h)
 
     // updates camera
     m_camera.apply_viewport(0, 0, w, h);
-
-#if !ENABLE_3DCONNEXION_DEVICES
-    m_dirty = false;
-#endif // !ENABLE_3DCONNEXION_DEVICES
 }
 
 BoundingBoxf3 GLCanvas3D::_max_bounding_box(bool include_gizmos, bool include_bed_model) const
@@ -3941,13 +3892,11 @@ void GLCanvas3D::_zoom_to_box(const BoundingBoxf3& box)
     m_dirty = true;
 }
 
-#if ENABLE_3DCONNEXION_DEVICES
 void GLCanvas3D::_update_camera_zoom(double zoom)
 {
     m_camera.update_zoom(zoom);
     m_dirty = true;
 }
-#endif // ENABLE_3DCONNEXION_DEVICES
 
 void GLCanvas3D::_refresh_if_shown_on_screen()
 {
diff --git a/src/slic3r/GUI/GLCanvas3D.hpp b/src/slic3r/GUI/GLCanvas3D.hpp
index 5c3c26c1d..2338ebc90 100644
--- a/src/slic3r/GUI/GLCanvas3D.hpp
+++ b/src/slic3r/GUI/GLCanvas3D.hpp
@@ -486,9 +486,7 @@ public:
     void set_color_by(const std::string& value);
 
     const Camera& get_camera() const { return m_camera; }
-#if ENABLE_3DCONNEXION_DEVICES
     Camera& get_camera() { return m_camera; }
-#endif // ENABLE_3DCONNEXION_DEVICES
 
     BoundingBoxf3 volumes_bounding_box() const;
     BoundingBoxf3 scene_bounding_box() const;
@@ -567,10 +565,6 @@ public:
     void do_flatten(const Vec3d& normal, const std::string& snapshot_type);
     void do_mirror(const std::string& snapshot_type);
 
-#if !ENABLE_3DCONNEXION_DEVICES
-    void set_camera_zoom(double zoom);
-#endif // !ENABLE_3DCONNEXION_DEVICES
-
     void update_gizmos_on_off_state();
     void reset_all_gizmos() { m_gizmos.reset_all_states(); }
 
@@ -644,9 +638,7 @@ private:
     BoundingBoxf3 _max_bounding_box(bool include_gizmos, bool include_bed_model) const;
 
     void _zoom_to_box(const BoundingBoxf3& box);
-#if ENABLE_3DCONNEXION_DEVICES
     void _update_camera_zoom(double zoom);
-#endif // ENABLE_3DCONNEXION_DEVICES
 
     void _refresh_if_shown_on_screen();
 
diff --git a/src/slic3r/GUI/ImGuiWrapper.cpp b/src/slic3r/GUI/ImGuiWrapper.cpp
index 7d7e82685..9dfe39bdd 100644
--- a/src/slic3r/GUI/ImGuiWrapper.cpp
+++ b/src/slic3r/GUI/ImGuiWrapper.cpp
@@ -529,10 +529,8 @@ void ImGuiWrapper::init_style()
     set_color(ImGuiCol_SliderGrab, COL_ORANGE_DARK);
     set_color(ImGuiCol_SliderGrabActive, COL_ORANGE_LIGHT);
 
-#if ENABLE_3DCONNEXION_DEVICES
     // Separator
     set_color(ImGuiCol_Separator, COL_ORANGE_LIGHT);
-#endif // ENABLE_3DCONNEXION_DEVICES
 }
 
 void ImGuiWrapper::render_draw_data(ImDrawData *draw_data)
diff --git a/src/slic3r/GUI/KBShortcutsDialog.cpp b/src/slic3r/GUI/KBShortcutsDialog.cpp
index 4bd56ee76..268682b81 100644
--- a/src/slic3r/GUI/KBShortcutsDialog.cpp
+++ b/src/slic3r/GUI/KBShortcutsDialog.cpp
@@ -157,9 +157,7 @@ void KBShortcutsDialog::fill_shortcuts()
     plater_shortcuts.push_back(Shortcut("Z",        L("Zoom to selected object")));
     plater_shortcuts.push_back(Shortcut("I",        L("Zoom in")));
     plater_shortcuts.push_back(Shortcut("O",        L("Zoom out")));
-#if ENABLE_3DCONNEXION_DEVICES
     plater_shortcuts.push_back(Shortcut(ctrl+"M",   L("Show/Hide 3Dconnexion devices settings dialog")));
-#endif // ENABLE_3DCONNEXION_DEVICES
     plater_shortcuts.push_back(Shortcut("ESC",      L("Unselect gizmo / Clear selection")));
 #if ENABLE_RENDER_PICKING_PASS
     // Don't localize debugging texts.
diff --git a/src/slic3r/GUI/MainFrame.cpp b/src/slic3r/GUI/MainFrame.cpp
index 8be99b6a6..3b5b1003f 100644
--- a/src/slic3r/GUI/MainFrame.cpp
+++ b/src/slic3r/GUI/MainFrame.cpp
@@ -24,9 +24,7 @@
 #include "PrintHostDialogs.hpp"
 #include "wxExtensions.hpp"
 #include "GUI_ObjectList.hpp"
-#if ENABLE_3DCONNEXION_DEVICES
 #include "Mouse3DController.hpp"
-#endif // ENABLE_3DCONNEXION_DEVICES
 #include "I18N.hpp"
 
 #include <fstream>
diff --git a/src/slic3r/GUI/Mouse3DController.cpp b/src/slic3r/GUI/Mouse3DController.cpp
index d75ad4390..631844c5c 100644
--- a/src/slic3r/GUI/Mouse3DController.cpp
+++ b/src/slic3r/GUI/Mouse3DController.cpp
@@ -1,8 +1,6 @@
 #include "libslic3r/libslic3r.h"
 #include "Mouse3DController.hpp"
 
-#if ENABLE_3DCONNEXION_DEVICES
-
 #include "Camera.hpp"
 #include "GUI_App.hpp"
 #include "PresetBundle.hpp"
@@ -647,5 +645,3 @@ bool Mouse3DController::handle_packet_button(const DataPacket& packet, unsigned
 
 } // namespace GUI
 } // namespace Slic3r
-
-#endif // ENABLE_3DCONNEXION_DEVICES
diff --git a/src/slic3r/GUI/Mouse3DController.hpp b/src/slic3r/GUI/Mouse3DController.hpp
index 916983e22..5530328b7 100644
--- a/src/slic3r/GUI/Mouse3DController.hpp
+++ b/src/slic3r/GUI/Mouse3DController.hpp
@@ -1,9 +1,7 @@
 #ifndef slic3r_Mouse3DController_hpp_
 #define slic3r_Mouse3DController_hpp_
 
-#if ENABLE_3DCONNEXION_DEVICES
-
-// Enabled debug output and extended imgui dialog
+// Enabled debug output to console and extended imgui dialog
 #define ENABLE_3DCONNEXION_DEVICES_DEBUG_OUTPUT 0
 
 #include "libslic3r/Point.hpp"
@@ -169,7 +167,5 @@ private:
 } // namespace GUI
 } // namespace Slic3r
 
-#endif // ENABLE_3DCONNEXION_DEVICES
-
 #endif // slic3r_Mouse3DController_hpp_
 
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index cfe180248..f75dde498 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -62,9 +62,7 @@
 #include "GUI_Preview.hpp"
 #include "3DBed.hpp"
 #include "Camera.hpp"
-#if ENABLE_3DCONNEXION_DEVICES
 #include "Mouse3DController.hpp"
-#endif // ENABLE_3DCONNEXION_DEVICES
 #include "Tab.hpp"
 #include "PresetBundle.hpp"
 #include "BackgroundSlicingProcess.hpp"
@@ -1373,9 +1371,7 @@ struct Plater::priv
     Sidebar *sidebar;
     Bed3D bed;
     Camera camera;
-#if ENABLE_3DCONNEXION_DEVICES
     Mouse3DController mouse3d_controller;
-#endif // ENABLE_3DCONNEXION_DEVICES
     View3D* view3D;
     GLToolbar view_toolbar;
     Preview *preview;
@@ -2107,9 +2103,7 @@ Plater::priv::priv(Plater *q, MainFrame *main_frame)
     // updates camera type from .ini file
     camera.set_type(get_config("use_perspective_camera"));
 
-#if ENABLE_3DCONNEXION_DEVICES
     mouse3d_controller.init();
-#endif // ENABLE_3DCONNEXION_DEVICES
 
     // Initialize the Undo / Redo stack with a first snapshot.
     this->take_snapshot(_(L("New Project")));
@@ -2117,9 +2111,7 @@ Plater::priv::priv(Plater *q, MainFrame *main_frame)
 
 Plater::priv::~priv()
 {
-#if ENABLE_3DCONNEXION_DEVICES
     mouse3d_controller.shutdown();
-#endif // ENABLE_3DCONNEXION_DEVICES
 
     if (config != nullptr)
         delete config;
@@ -5159,7 +5151,6 @@ const Camera& Plater::get_camera() const
     return p->camera;
 }
 
-#if ENABLE_3DCONNEXION_DEVICES
 const Mouse3DController& Plater::get_mouse3d_controller() const
 {
     return p->mouse3d_controller;
@@ -5169,7 +5160,6 @@ Mouse3DController& Plater::get_mouse3d_controller()
 {
     return p->mouse3d_controller;
 }
-#endif // ENABLE_3DCONNEXION_DEVICES
 
 bool Plater::can_delete() const { return p->can_delete(); }
 bool Plater::can_delete_all() const { return p->can_delete_all(); }
diff --git a/src/slic3r/GUI/Plater.hpp b/src/slic3r/GUI/Plater.hpp
index a87ba39b4..c327b4d91 100644
--- a/src/slic3r/GUI/Plater.hpp
+++ b/src/slic3r/GUI/Plater.hpp
@@ -260,10 +260,8 @@ public:
     void msw_rescale();
 
     const Camera& get_camera() const;
-#if ENABLE_3DCONNEXION_DEVICES
     const Mouse3DController& get_mouse3d_controller() const;
     Mouse3DController& get_mouse3d_controller();
-#endif // ENABLE_3DCONNEXION_DEVICES
 
 	// ROII wrapper for suppressing the Undo / Redo snapshot to be taken.
 	class SuppressSnapshots