diff --git a/README.md b/README.md
index 7acc56b..e1dac0a 100644
--- a/README.md
+++ b/README.md
@@ -313,4 +313,11 @@ multi-user.target reached after 54.214s in userspace
 sudo apt-get install hdparm
 
 sudo hdparm -t /dev/mmcblk0
-```
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+```
+## Hardware
+### Dar permisos a los puertos seriales sin sudo
+
+```sh
+sudo usermod -a -G dialout $USER
+```
+Es necesario reiniciar la sesión
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