diff --git a/docs/settings/serial-plugin.md b/docs/settings/serial-plugin.md
index 13cdaa57..dc19db7c 100644
--- a/docs/settings/serial-plugin.md
+++ b/docs/settings/serial-plugin.md
@@ -10,6 +10,10 @@ import TabItem from '@theme/TabItem';
 GPIO access is fundamentally dangerous because invalid options can physically damage or destroy your hardware. Ensure that you fully understand the schematic for your particular device before trying this as we do not offer a warranty. Use at your own risk.
 :::
 
+:::note
+This plugin requires attaching a peripheral accessory to your device. It will not work without one.
+:::
+
 ## Overview
 
 This is a simple interface to send messages over the mesh network by sending strings over a serial port.