diff --git a/config.g b/config.g
index 2c81385..e07a205 100644
--- a/config.g
+++ b/config.g
@@ -63,8 +63,10 @@ M143 H1 S280                                       ; set temperature limit for h
 M950 F0 C"out7" Q500                               ; create fan 0 on pin out7 and set its frequency
 M106 P0 C"Hotend fan" S1 H1 T45                    ; set fan 0 value. Thermostatic control is turned on
 M950 F1 C"out4" Q20                                ; create fan 1 on pin out4
+;M950 F1 C"!out4+out4.tach" Q25000                 ; create fan 1 on  pin out4 pwm fan (4 wires)
 M106 P1 C"Layer fan" S0 H-1 -L255                  ; set fan 1 value. Thermostatic control is turned off
 
+
 ; Lights
 M950 P2 C"out8"                                    ; create output for lighning via DC DC SSR