diff --git a/Marlin/Conditionals_post.h b/Marlin/Conditionals_post.h
index 95054af1e..5dc5abc48 100644
--- a/Marlin/Conditionals_post.h
+++ b/Marlin/Conditionals_post.h
@@ -509,6 +509,7 @@
   #define HAS_E4_STEP (PIN_EXISTS(E4_STEP))
   #define HAS_DIGIPOTSS (PIN_EXISTS(DIGIPOTSS))
   #define HAS_BUZZER (PIN_EXISTS(BEEPER) || ENABLED(LCD_USE_I2C_BUZZER))
+  #define HAS_CASE_LIGHT (PIN_EXISTS(CASE_LIGHT))
 
   #define HAS_MOTOR_CURRENT_PWM (PIN_EXISTS(MOTOR_CURRENT_PWM_XY) || PIN_EXISTS(MOTOR_CURRENT_PWM_Z) || PIN_EXISTS(MOTOR_CURRENT_PWM_E))
 
diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
index 067d86c48..95eb0c4b0 100644
--- a/Marlin/Configuration_adv.h
+++ b/Marlin/Configuration_adv.h
@@ -224,6 +224,10 @@
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
+// Define a pin to turn case light on/off
+//#define CASE_LIGHT_PIN 4
+//#define CASE_LIGHT_DEFAULT_ON   // Uncomment to set default state to on
+
 //===========================================================================
 //============================ Mechanical Settings ==========================
 //===========================================================================
diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
index bb8939542..011f5467f 100755
--- a/Marlin/Marlin_main.cpp
+++ b/Marlin/Marlin_main.cpp
@@ -861,11 +861,17 @@ void setup_homepin(void) {
   #endif
 }
 
-void setup_photpin() {
-  #if HAS_PHOTOGRAPH
-    OUT_WRITE(PHOTOGRAPH_PIN, LOW);
-  #endif
-}
+#if HAS_CASE_LIGHT
+
+  void setup_case_light() {
+    #if ENABLED(CASE_LIGHT_DEFAULT_ON)
+      OUT_WRITE(CASE_LIGHT_PIN, HIGH);
+    #else
+      OUT_WRITE(CASE_LIGHT_PIN, LOW);
+    #endif
+  }
+
+#endif
 
 void setup_powerhold() {
   #if HAS_SUICIDE
@@ -7087,6 +7093,38 @@ inline void gcode_M907() {
 
 #endif // HAS_MICROSTEPS
 
+#if HAS_CASE_LIGHT
+  /**
+   * M355: Turn case lights on/off
+   *
+   *   S<int>   change state on/off or sets PWM
+   *
+   */
+  inline void gcode_M355() {
+    if (code_seen('S')) {
+      SERIAL_ECHO_START;
+      SERIAL_ECHOPGM("Case lights ");
+      byte light_pwm = code_value_byte();
+      switch (light_pwm) {
+        case 0: // Disable lights
+          SERIAL_ECHOPGM("off");
+          break;
+        case 1: // Enable lights
+          light_pwm = 255;
+          SERIAL_ECHOPGM("on");
+          break;
+        default: // Enable lights PWM
+          SERIAL_ECHOPAIR("set to: ", (int)map(light_pwm, 0, 255, 0, 100));
+          SERIAL_CHAR('%');
+          break;
+      }
+      analogWrite(CASE_LIGHT_PIN, light_pwm);
+      SERIAL_EOL;
+    }
+  }
+
+#endif // HAS_CASE_LIGHT
+
 #if ENABLED(MIXING_EXTRUDER)
 
   /**
@@ -8195,6 +8233,14 @@ void process_next_command() {
 
       #endif // HAS_MICROSTEPS
 
+      #if HAS_CASE_LIGHT
+
+        case 355: // M355 Turn case lights on/off
+          gcode_M355();
+          break;
+
+      #endif // HAS_CASE_LIGHT
+
       case 999: // M999: Restart after being Stopped
         gcode_M999();
         break;
@@ -9693,9 +9739,16 @@ void setup() {
   #endif
 
   stepper.init();    // Initialize stepper, this enables interrupts!
-  setup_photpin();
   servo_init();
 
+  #if HAS_PHOTOGRAPH
+    OUT_WRITE(PHOTOGRAPH_PIN, LOW);
+  #endif
+
+  #if HAS_CASE_LIGHT
+    setup_case_light();
+  #endif
+
   #if HAS_BED_PROBE
     endstops.enable_z_probe(false);
   #endif
diff --git a/Marlin/example_configurations/Cartesio/Configuration_adv.h b/Marlin/example_configurations/Cartesio/Configuration_adv.h
index 0cef74a09..dc8b7823d 100644
--- a/Marlin/example_configurations/Cartesio/Configuration_adv.h
+++ b/Marlin/example_configurations/Cartesio/Configuration_adv.h
@@ -224,6 +224,10 @@
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 35
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
+// Define a pin to turn case light on/off
+//#define CASE_LIGHT_PIN 4
+//#define CASE_LIGHT_DEFAULT_ON   // Uncomment to set default state to on
+
 //===========================================================================
 //============================ Mechanical Settings ==========================
 //===========================================================================
diff --git a/Marlin/example_configurations/Felix/Configuration_adv.h b/Marlin/example_configurations/Felix/Configuration_adv.h
index 7139ac135..c3d24860a 100644
--- a/Marlin/example_configurations/Felix/Configuration_adv.h
+++ b/Marlin/example_configurations/Felix/Configuration_adv.h
@@ -224,6 +224,10 @@
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
+// Define a pin to turn case light on/off
+//#define CASE_LIGHT_PIN 4
+//#define CASE_LIGHT_DEFAULT_ON   // Uncomment to set default state to on
+
 //===========================================================================
 //============================ Mechanical Settings ==========================
 //===========================================================================
diff --git a/Marlin/example_configurations/Hephestos/Configuration_adv.h b/Marlin/example_configurations/Hephestos/Configuration_adv.h
index 8f04e5ea3..e86bcbe44 100644
--- a/Marlin/example_configurations/Hephestos/Configuration_adv.h
+++ b/Marlin/example_configurations/Hephestos/Configuration_adv.h
@@ -224,6 +224,10 @@
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
+// Define a pin to turn case light on/off
+//#define CASE_LIGHT_PIN 4
+//#define CASE_LIGHT_DEFAULT_ON   // Uncomment to set default state to on
+
 //===========================================================================
 //============================ Mechanical Settings ==========================
 //===========================================================================
diff --git a/Marlin/example_configurations/Hephestos_2/Configuration_adv.h b/Marlin/example_configurations/Hephestos_2/Configuration_adv.h
index b221ab74c..4ab583e3b 100644
--- a/Marlin/example_configurations/Hephestos_2/Configuration_adv.h
+++ b/Marlin/example_configurations/Hephestos_2/Configuration_adv.h
@@ -224,6 +224,10 @@
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
+// Define a pin to turn case light on/off
+//#define CASE_LIGHT_PIN 4
+//#define CASE_LIGHT_DEFAULT_ON   // Uncomment to set default state to on
+
 //===========================================================================
 //============================ Mechanical Settings ==========================
 //===========================================================================
diff --git a/Marlin/example_configurations/K8200/Configuration_adv.h b/Marlin/example_configurations/K8200/Configuration_adv.h
index 8ea34fc92..8bc63b84a 100644
--- a/Marlin/example_configurations/K8200/Configuration_adv.h
+++ b/Marlin/example_configurations/K8200/Configuration_adv.h
@@ -230,6 +230,10 @@
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
+// Define a pin to turn case light on/off
+//#define CASE_LIGHT_PIN 4
+//#define CASE_LIGHT_DEFAULT_ON   // Uncomment to set default state to on
+
 //===========================================================================
 //============================ Mechanical Settings ==========================
 //===========================================================================
diff --git a/Marlin/example_configurations/K8400/Configuration_adv.h b/Marlin/example_configurations/K8400/Configuration_adv.h
index 3cc822cc4..106193029 100644
--- a/Marlin/example_configurations/K8400/Configuration_adv.h
+++ b/Marlin/example_configurations/K8400/Configuration_adv.h
@@ -224,6 +224,10 @@
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
+// Define a pin to turn case light on/off
+//#define CASE_LIGHT_PIN 4
+//#define CASE_LIGHT_DEFAULT_ON   // Uncomment to set default state to on
+
 //===========================================================================
 //============================ Mechanical Settings ==========================
 //===========================================================================
diff --git a/Marlin/example_configurations/RigidBot/Configuration_adv.h b/Marlin/example_configurations/RigidBot/Configuration_adv.h
index 71166d48d..e77c60c9c 100644
--- a/Marlin/example_configurations/RigidBot/Configuration_adv.h
+++ b/Marlin/example_configurations/RigidBot/Configuration_adv.h
@@ -224,6 +224,10 @@
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
+// Define a pin to turn case light on/off
+//#define CASE_LIGHT_PIN 4
+//#define CASE_LIGHT_DEFAULT_ON   // Uncomment to set default state to on
+
 //===========================================================================
 //============================ Mechanical Settings ==========================
 //===========================================================================
diff --git a/Marlin/example_configurations/SCARA/Configuration_adv.h b/Marlin/example_configurations/SCARA/Configuration_adv.h
index 706f41270..f4ebfb3b7 100644
--- a/Marlin/example_configurations/SCARA/Configuration_adv.h
+++ b/Marlin/example_configurations/SCARA/Configuration_adv.h
@@ -224,6 +224,10 @@
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
+// Define a pin to turn case light on/off
+//#define CASE_LIGHT_PIN 4
+//#define CASE_LIGHT_DEFAULT_ON   // Uncomment to set default state to on
+
 //===========================================================================
 //============================ Mechanical Settings ==========================
 //===========================================================================
diff --git a/Marlin/example_configurations/TAZ4/Configuration_adv.h b/Marlin/example_configurations/TAZ4/Configuration_adv.h
index 2a39074b7..f3e15eb43 100644
--- a/Marlin/example_configurations/TAZ4/Configuration_adv.h
+++ b/Marlin/example_configurations/TAZ4/Configuration_adv.h
@@ -232,6 +232,10 @@
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
+// Define a pin to turn case light on/off
+//#define CASE_LIGHT_PIN 4
+//#define CASE_LIGHT_DEFAULT_ON   // Uncomment to set default state to on
+
 //===========================================================================
 //============================ Mechanical Settings ==========================
 //===========================================================================
diff --git a/Marlin/example_configurations/WITBOX/Configuration_adv.h b/Marlin/example_configurations/WITBOX/Configuration_adv.h
index 8f04e5ea3..e86bcbe44 100644
--- a/Marlin/example_configurations/WITBOX/Configuration_adv.h
+++ b/Marlin/example_configurations/WITBOX/Configuration_adv.h
@@ -224,6 +224,10 @@
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
+// Define a pin to turn case light on/off
+//#define CASE_LIGHT_PIN 4
+//#define CASE_LIGHT_DEFAULT_ON   // Uncomment to set default state to on
+
 //===========================================================================
 //============================ Mechanical Settings ==========================
 //===========================================================================
diff --git a/Marlin/example_configurations/delta/biv2.5/Configuration_adv.h b/Marlin/example_configurations/delta/biv2.5/Configuration_adv.h
index 0a0036972..3932d5920 100644
--- a/Marlin/example_configurations/delta/biv2.5/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/biv2.5/Configuration_adv.h
@@ -224,6 +224,10 @@
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
+// Define a pin to turn case light on/off
+//#define CASE_LIGHT_PIN 4
+//#define CASE_LIGHT_DEFAULT_ON   // Uncomment to set default state to on
+
 //===========================================================================
 //============================ Mechanical Settings ==========================
 //===========================================================================
diff --git a/Marlin/example_configurations/delta/generic/Configuration_adv.h b/Marlin/example_configurations/delta/generic/Configuration_adv.h
index 009fad39a..873d634cf 100644
--- a/Marlin/example_configurations/delta/generic/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/generic/Configuration_adv.h
@@ -224,6 +224,10 @@
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
+// Define a pin to turn case light on/off
+//#define CASE_LIGHT_PIN 4
+//#define CASE_LIGHT_DEFAULT_ON   // Uncomment to set default state to on
+
 //===========================================================================
 //============================ Mechanical Settings ==========================
 //===========================================================================
diff --git a/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h b/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
index 009fad39a..873d634cf 100644
--- a/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
@@ -224,6 +224,10 @@
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
+// Define a pin to turn case light on/off
+//#define CASE_LIGHT_PIN 4
+//#define CASE_LIGHT_DEFAULT_ON   // Uncomment to set default state to on
+
 //===========================================================================
 //============================ Mechanical Settings ==========================
 //===========================================================================
diff --git a/Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h b/Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h
index 33aed463b..06a3c9798 100644
--- a/Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h
@@ -229,6 +229,10 @@
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
+// Define a pin to turn case light on/off
+//#define CASE_LIGHT_PIN 4
+//#define CASE_LIGHT_DEFAULT_ON   // Uncomment to set default state to on
+
 //===========================================================================
 //============================ Mechanical Settings ==========================
 //===========================================================================
diff --git a/Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h b/Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h
index 70f035f3d..17b07b5e8 100644
--- a/Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h
@@ -224,6 +224,10 @@
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
+// Define a pin to turn case light on/off
+//#define CASE_LIGHT_PIN 4
+//#define CASE_LIGHT_DEFAULT_ON   // Uncomment to set default state to on
+
 //===========================================================================
 //============================ Mechanical Settings ==========================
 //===========================================================================
diff --git a/Marlin/example_configurations/makibox/Configuration_adv.h b/Marlin/example_configurations/makibox/Configuration_adv.h
index 279fa7e32..bb6afc928 100644
--- a/Marlin/example_configurations/makibox/Configuration_adv.h
+++ b/Marlin/example_configurations/makibox/Configuration_adv.h
@@ -224,6 +224,10 @@
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
+// Define a pin to turn case light on/off
+//#define CASE_LIGHT_PIN 4
+//#define CASE_LIGHT_DEFAULT_ON   // Uncomment to set default state to on
+
 //===========================================================================
 //============================ Mechanical Settings ==========================
 //===========================================================================
diff --git a/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h b/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
index bea6cd5dd..2e57f8c7b 100644
--- a/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
+++ b/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
@@ -224,6 +224,10 @@
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
+// Define a pin to turn case light on/off
+//#define CASE_LIGHT_PIN 4
+//#define CASE_LIGHT_DEFAULT_ON   // Uncomment to set default state to on
+
 //===========================================================================
 //============================ Mechanical Settings ==========================
 //===========================================================================