diff --git a/docs/cm4_conf_txt_add.md b/docs/cm4_conf_txt_add.md
new file mode 100644
index 0000000..2bb65a4
--- /dev/null
+++ b/docs/cm4_conf_txt_add.md
@@ -0,0 +1,4 @@
+```
+dtoverlay=dwc2,dr_mode=host
+eeprom_write_protect=1
+```