diff --git a/Marlin/src/inc/Conditionals_LCD.h b/Marlin/src/inc/Conditionals_LCD.h
index b55c658024..f43ea40d5f 100644
--- a/Marlin/src/inc/Conditionals_LCD.h
+++ b/Marlin/src/inc/Conditionals_LCD.h
@@ -229,17 +229,14 @@
 
  // Einstart OLED has Cardinal nav via pins defined in pins_EINSTART-S.h
  #if ENABLED(U8GLIB_SH1106_EINSTART)
-   #define ULTRA_LCD
    #define DOGLCD
    #define ULTIPANEL
-   #define NEWPANEL
  #endif
 
  /**
   * FSMC/SPI TFT PANELS
   */
  #if ENABLED(MKS_ROBIN_TFT)
-   #define ULTRA_LCD
    #define DOGLCD
    #define ULTIPANEL
  #endif
@@ -330,7 +327,7 @@
 #endif
 
 #if ENABLED(ULTIPANEL)
-  #define NEWPANEL  // Disable this if you actually have no click-encoder panel
+  #define NEWPANEL        // Disable if there's actually no click-encoder panel
   #define ULTRA_LCD
 #endif
 
diff --git a/Marlin/src/pins/linux/pins_RAMPS_LINUX.h b/Marlin/src/pins/linux/pins_RAMPS_LINUX.h
index 36277859b4..1fd8929716 100644
--- a/Marlin/src/pins/linux/pins_RAMPS_LINUX.h
+++ b/Marlin/src/pins/linux/pins_RAMPS_LINUX.h
@@ -221,9 +221,9 @@
 #endif
 
 #if ENABLED(CASE_LIGHT_ENABLE) && !defined(CASE_LIGHT_PIN) && !defined(SPINDLE_LASER_ENA_PIN)
-  #if NUM_SERVOS <= 1 // try to use servo connector first
+  #if NUM_SERVOS <= 1 // Prefer the servo connector
     #define CASE_LIGHT_PIN    6   // Hardware PWM
-  #elif !(BOTH(ULTRA_LCD, NEWPANEL) && ANY(PANEL_ONE, VIKI2, miniVIKI, MINIPANEL, REPRAPWORLD_KEYPAD))  // try to use AUX 2
+  #elif HAS_FREE_AUX2_PINS        // try to use AUX 2
     #define CASE_LIGHT_PIN   44   // Hardware PWM
   #endif
 #endif
@@ -232,11 +232,11 @@
 // M3/M4/M5 - Spindle/Laser Control
 //
 #if HAS_CUTTER && !PIN_EXISTS(SPINDLE_LASER_ENA)
-  #if !defined(NUM_SERVOS) || NUM_SERVOS == 0 // try to use servo connector first
+  #if !defined(NUM_SERVOS) || NUM_SERVOS == 0 // Prefer the servo connector
     #define SPINDLE_LASER_ENA_PIN     4   // Pullup or pulldown!
     #define SPINDLE_LASER_PWM_PIN     6   // Hardware PWM
     #define SPINDLE_DIR_PIN           5
-  #elif !(BOTH(ULTRA_LCD, NEWPANEL) && ANY(PANEL_ONE, VIKI2, miniVIKI, MINIPANEL, REPRAPWORLD_KEYPAD))  // try to use AUX 2
+  #elif HAS_FREE_AUX2_PINS                // try to use AUX 2
     #define SPINDLE_LASER_ENA_PIN    40   // Pullup or pulldown!
     #define SPINDLE_LASER_PWM_PIN    44   // Hardware PWM
     #define SPINDLE_DIR_PIN          65
diff --git a/Marlin/src/pins/pins.h b/Marlin/src/pins/pins.h
index 5fdfd6a160..5e503cdac4 100644
--- a/Marlin/src/pins/pins.h
+++ b/Marlin/src/pins/pins.h
@@ -47,6 +47,8 @@
   #define IS_RAMPS_SF
 #endif
 
+#define HAS_FREE_AUX2_PINS !(BOTH(ULTRA_LCD, NEWPANEL) && ANY(PANEL_ONE, VIKI2, miniVIKI, MINIPANEL, REPRAPWORLD_KEYPAD))
+
 //
 // RAMPS 1.3 / 1.4 - ATmega1280, ATmega2560
 //
@@ -1079,3 +1081,5 @@
     #endif
   #endif
 #endif
+
+#undef HAS_FREE_AUX2_PINS
diff --git a/Marlin/src/pins/ramps/pins_RAMPS.h b/Marlin/src/pins/ramps/pins_RAMPS.h
index 754ddf8e2c..9853dc7010 100644
--- a/Marlin/src/pins/ramps/pins_RAMPS.h
+++ b/Marlin/src/pins/ramps/pins_RAMPS.h
@@ -258,12 +258,10 @@
   #define PS_ON_PIN        12
 #endif
 
-#define AUX2_PINS_FREE !( BOTH(ULTRA_LCD, NEWPANEL) && ANY(PANEL_ONE, VIKI2, miniVIKI, MINIPANEL, REPRAPWORLD_KEYPAD) )
-
 #if ENABLED(CASE_LIGHT_ENABLE) && !defined(CASE_LIGHT_PIN) && !defined(SPINDLE_LASER_ENA_PIN)
-  #if NUM_SERVOS <= 1 // try to use servo connector first
+  #if NUM_SERVOS <= 1 // Prefer the servo connector
     #define CASE_LIGHT_PIN  6   // Hardware PWM
-  #elif AUX2_PINS_FREE
+  #elif HAS_FREE_AUX2_PINS
     #define CASE_LIGHT_PIN 44   // Hardware PWM
   #endif
 #endif
@@ -276,7 +274,7 @@
     #define SPINDLE_LASER_ENA_PIN     4   // Pullup or pulldown!
     #define SPINDLE_LASER_PWM_PIN     6   // Hardware PWM
     #define SPINDLE_DIR_PIN           5
-  #elif AUX2_PINS_FREE
+  #elif HAS_FREE_AUX2_PINS
     #define SPINDLE_LASER_ENA_PIN    40   // Pullup or pulldown!
     #define SPINDLE_LASER_PWM_PIN    44   // Hardware PWM
     #define SPINDLE_DIR_PIN          65
@@ -285,8 +283,6 @@
   #endif
 #endif
 
-#undef AUX2_PINS_FREE
-
 //
 // TMC software SPI
 //
diff --git a/Marlin/src/pins/ramps/pins_Z_BOLT_X_SERIES.h b/Marlin/src/pins/ramps/pins_Z_BOLT_X_SERIES.h
index 303c18cee4..45bad889ff 100644
--- a/Marlin/src/pins/ramps/pins_Z_BOLT_X_SERIES.h
+++ b/Marlin/src/pins/ramps/pins_Z_BOLT_X_SERIES.h
@@ -157,12 +157,10 @@
   #define PS_ON_PIN        12
 #endif
 
-#define AUX2_PINS_FREE !( BOTH(ULTRA_LCD, NEWPANEL) && ANY(PANEL_ONE, VIKI2, miniVIKI, MINIPANEL, REPRAPWORLD_KEYPAD) )
-
 #if ENABLED(CASE_LIGHT_ENABLE) && !defined(CASE_LIGHT_PIN) && !defined(SPINDLE_LASER_ENA_PIN)
-  #if NUM_SERVOS <= 1 // try to use servo connector first
+  #if NUM_SERVOS <= 1 // Prefer the servo connector
     #define CASE_LIGHT_PIN    6   // Hardware PWM
-  #elif AUX2_PINS_FREE
+  #elif HAS_FREE_AUX2_PINS
     #define CASE_LIGHT_PIN   44   // Hardware PWM
   #endif
 #endif
@@ -171,19 +169,17 @@
 // M3/M4/M5 - Spindle/Laser Control
 //
 #if HAS_CUTTER && !PIN_EXISTS(SPINDLE_LASER_ENA)
-  #if !defined(NUM_SERVOS) || NUM_SERVOS == 0 // try to use servo connector first
+  #if !defined(NUM_SERVOS) || NUM_SERVOS == 0 // Prefer the servo connector
     #define SPINDLE_LASER_ENA_PIN     4   // Pullup or pulldown!
     #define SPINDLE_LASER_PWM_PIN     6   // Hardware PWM
     #define SPINDLE_DIR_PIN           5
-  #elif AUX2_PINS_FREE
+  #elif HAS_FREE_AUX2_PINS
     #define SPINDLE_LASER_ENA_PIN    40   // Pullup or pulldown!
     #define SPINDLE_LASER_PWM_PIN    44   // Hardware PWM
     #define SPINDLE_DIR_PIN          65
   #endif
 #endif
 
-#undef AUX2_PINS_FREE
-
 //
 // TMC software SPI
 //