diff --git a/README.md b/README.md
index 0966d0a..64822a1 100644
--- a/README.md
+++ b/README.md
@@ -29,4 +29,11 @@ JP1
    ┣━ White LED (GPIO23)
 ━━━┛
 
-```
\ No newline at end of file
+```
+
+## Notes
+
+ - GPIO13, GPIO14 , GPIO19 and GPIO27 are reserved for an Eink display.
+ - GPIO25 and GPIO26 are reserved for an unknown device.
+ - There are traces and footprints for a buzzer.
+ - There are traces and footprints for a fifth switch.
\ No newline at end of file