diff --git a/Marlin/Conditionals_LCD.h b/Marlin/Conditionals_LCD.h
index 60ed5ce6e..1cad0a0e3 100644
--- a/Marlin/Conditionals_LCD.h
+++ b/Marlin/Conditionals_LCD.h
@@ -267,4 +267,42 @@
     #define BOOTSCREEN_TIMEOUT 2500
   #endif
 
+  /**
+   * Extruders have some combination of stepper motors and hotends
+   * so we separate these concepts into the defines:
+   *
+   *  EXTRUDERS    - Number of Selectable Tools
+   *  HOTENDS      - Number of hotends, whether connected or separate
+   *  E_STEPPERS   - Number of actual E stepper motors
+   *  TOOL_E_INDEX - Index to use when getting/setting the tool state
+   *  
+   */
+  #if ENABLED(SINGLENOZZLE)             // One hotend, multi-extruder
+    #define HOTENDS      1
+    #define E_STEPPERS   EXTRUDERS
+    #define E_MANUAL     EXTRUDERS
+    #define TOOL_E_INDEX current_block->active_extruder
+    #undef TEMP_SENSOR_1_AS_REDUNDANT
+    #undef HOTEND_OFFSET_X
+    #undef HOTEND_OFFSET_Y
+  #elif ENABLED(SWITCHING_EXTRUDER)     // One E stepper, unified E axis, two hotends
+    #define HOTENDS      EXTRUDERS
+    #define E_STEPPERS   1
+    #define E_MANUAL     1
+    #define TOOL_E_INDEX 0
+    #ifndef HOTEND_OFFSET_Z
+      #define HOTEND_OFFSET_Z { 0 }
+    #endif
+  #elif ENABLED(MIXING_EXTRUDER)        // Multi-stepper, unified E axis, one hotend
+    #define HOTENDS      1
+    #define E_STEPPERS   MIXING_STEPPERS
+    #define E_MANUAL     1
+    #define TOOL_E_INDEX 0
+  #else                                 // One stepper, E axis, and hotend per tool
+    #define HOTENDS      EXTRUDERS
+    #define E_STEPPERS   EXTRUDERS
+    #define E_MANUAL     EXTRUDERS
+    #define TOOL_E_INDEX current_block->active_extruder
+  #endif
+
 #endif //CONDITIONALS_LCD_H
diff --git a/Marlin/Conditionals_post.h b/Marlin/Conditionals_post.h
index 8a51187e6..59750fc28 100644
--- a/Marlin/Conditionals_post.h
+++ b/Marlin/Conditionals_post.h
@@ -325,44 +325,6 @@
   #define HAS_PID_HEATING (ENABLED(PIDTEMP) || ENABLED(PIDTEMPBED))
   #define HAS_PID_FOR_BOTH (ENABLED(PIDTEMP) && ENABLED(PIDTEMPBED))
 
-  /**
-   * Extruders have some combination of stepper motors and hotends
-   * so we separate these concepts into the defines:
-   *
-   *  EXTRUDERS    - Number of Selectable Tools
-   *  HOTENDS      - Number of hotends, whether connected or separate
-   *  E_STEPPERS   - Number of actual E stepper motors
-   *  TOOL_E_INDEX - Index to use when getting/setting the tool state
-   *  
-   */
-  #if ENABLED(SINGLENOZZLE)             // One hotend, multi-extruder
-    #define HOTENDS      1
-    #define E_STEPPERS   EXTRUDERS
-    #define E_MANUAL     EXTRUDERS
-    #define TOOL_E_INDEX current_block->active_extruder
-    #undef TEMP_SENSOR_1_AS_REDUNDANT
-    #undef HOTEND_OFFSET_X
-    #undef HOTEND_OFFSET_Y
-  #elif ENABLED(SWITCHING_EXTRUDER)     // One E stepper, unified E axis, two hotends
-    #define HOTENDS      EXTRUDERS
-    #define E_STEPPERS   1
-    #define E_MANUAL     1
-    #define TOOL_E_INDEX 0
-    #ifndef HOTEND_OFFSET_Z
-      #define HOTEND_OFFSET_Z { 0 }
-    #endif
-  #elif ENABLED(MIXING_EXTRUDER)        // Multi-stepper, unified E axis, one hotend
-    #define HOTENDS      1
-    #define E_STEPPERS   MIXING_STEPPERS
-    #define E_MANUAL     1
-    #define TOOL_E_INDEX 0
-  #else                                 // One stepper, E axis, and hotend per tool
-    #define HOTENDS      EXTRUDERS
-    #define E_STEPPERS   EXTRUDERS
-    #define E_MANUAL     EXTRUDERS
-    #define TOOL_E_INDEX current_block->active_extruder
-  #endif
-
   /**
    * Default hotend offsets, if not defined
    */
diff --git a/Marlin/pins_FELIX2.h b/Marlin/pins_FELIX2.h
index 83ce47bf5..31906b515 100644
--- a/Marlin/pins_FELIX2.h
+++ b/Marlin/pins_FELIX2.h
@@ -30,6 +30,7 @@
 
 #define BOARD_NAME "Felix 2.0+"
 
+// Power outputs EFBF or EFBE
 #define MOSFET_D_PIN 7
 
 #include "pins_RAMPS.h"
diff --git a/Marlin/pins_MKS_13.h b/Marlin/pins_MKS_13.h
index 36fc0f7b8..3b5b242ab 100644
--- a/Marlin/pins_MKS_13.h
+++ b/Marlin/pins_MKS_13.h
@@ -35,6 +35,7 @@
 
 #define BOARD_NAME "MKS > v1.3"
 
+// Power outputs EFBF or EFBE
 #define MOSFET_D_PIN 7
 
 #include "pins_RAMPS.h"
diff --git a/Marlin/pins_MKS_BASE.h b/Marlin/pins_MKS_BASE.h
index fdaff0689..8c7222017 100644
--- a/Marlin/pins_MKS_BASE.h
+++ b/Marlin/pins_MKS_BASE.h
@@ -30,6 +30,7 @@
 
 #define BOARD_NAME "MKS BASE 1.0"
 
+// Power outputs EFBF or EFBE
 #define MOSFET_D_PIN 7
 
 #include "pins_RAMPS.h"
\ No newline at end of file
diff --git a/Marlin/pins_RAMPS.h b/Marlin/pins_RAMPS.h
index fb378e07f..3280dd3e0 100644
--- a/Marlin/pins_RAMPS.h
+++ b/Marlin/pins_RAMPS.h
@@ -114,11 +114,8 @@
   #define SLED_PIN           -1
 #endif
 
-/*
-
 // Augmentation for auto-assigning RAMPS plugs
-
-#if DISABLED(IS_RAMPS_EEB) && DISABLED(IS_RAMPS_EEF) && DISABLED(IS_RAMPS_EFB) && DISABLED(IS_RAMPS_EFF) && DISABLED(IS_RAMPS_SF)
+#if DISABLED(IS_RAMPS_EEB) && DISABLED(IS_RAMPS_EEF) && DISABLED(IS_RAMPS_EFB) && DISABLED(IS_RAMPS_EFF) && DISABLED(IS_RAMPS_SF) && !PIN_EXISTS(MOSFET_D)
   #if HOTENDS > 1
     #if TEMP_SENSOR_BED
       #define IS_RAMPS_EEB
@@ -132,8 +129,6 @@
   #endif
 #endif
 
-*/
-
 /**
  * Hi Voltage PWM Pin Assignments
  */
@@ -168,7 +163,7 @@
   #define CONTROLLERFAN_PIN  -1
 #elif ENABLED(IS_RAMPS_SF)                     // Spindle, Fan
   #define FAN_PIN        RAMPS_D8_PIN
-#else                                          // Non-specific are "EFB" by legacy
+#else                                          // Non-specific are "EFB" (i.e., "EFBF" or "EFBE")
   #define FAN_PIN        RAMPS_D9_PIN
   #define HEATER_BED_PIN RAMPS_D8_PIN
   #if HOTENDS == 1