diff --git a/scripts/SATA-hat.sh b/scripts/SATA-hat.sh
index 9cbd704..a409752 100755
--- a/scripts/SATA-hat.sh
+++ b/scripts/SATA-hat.sh
@@ -6,6 +6,7 @@ PWM_PATH="$BASE_PATH"/pwm/pwmchip0
 
 # GPIO pins
 CPU_FAN=12
+HDD_FAN=13
 
 # Values
 LOW=0
@@ -49,11 +50,13 @@ set_pwm() {
 
 turn_on() {
     set_gpio $CPU_FAN $HIGH
+    set_gpio $HDD_FAN $HIGH
     set_pwm
 }
 
 turn_off() {
     set_gpio $CPU_FAN $LOW clean
+    set_gpio $HDD_FAN $LOW clean
     set_pwm clean
 }