Specify some extra CR-10S pins

Marlin/src/config/examples/Creality/CR-10S/Configuration.h

 // Please choose the name from boards.h that matches your setup
 #ifndef MOTHERBOARD
   #define MOTHERBOARD BOARD_RAMPS_14_EFB
+  #define PIN_EXP1 65 // A11
+  #define PIN_EXP2 66 // A12
+  #define PIN_EXP3 11 // SERVO0_PIN
+  #define PIN_EXP4 12 // PS_ON_PIN
 #endif
 
 // Optional custom name for your RepStrap or other custom machine