diff --git a/Marlin/src/pins/ramps/pins_TENLOG_D3_HERO.h b/Marlin/src/pins/ramps/pins_TENLOG_D3_HERO.h
index b884fcbfc7..977be79191 100644
--- a/Marlin/src/pins/ramps/pins_TENLOG_D3_HERO.h
+++ b/Marlin/src/pins/ramps/pins_TENLOG_D3_HERO.h
@@ -148,6 +148,7 @@
 //
 // Misc. Functions
 //
+//#define PS_ON_PIN                           40  // The M80/M81 PSU pin for boards v2.1-2.3
 //#define CASE_LIGHT_PIN                       5
 #define SDSS                                  53
 //#ifndef LED_PIN