diff --git a/data/configuration.example.yaml b/data/configuration.example.yaml
index 4af9322448..84857ea431 100644
--- a/data/configuration.example.yaml
+++ b/data/configuration.example.yaml
@@ -14,10 +14,14 @@ mqtt:
     # user: my_user
     # password: my_password
 
-# Serial settings
-serial:
-    # Location of CC2531 USB sniffer
-    port: /dev/ttyACM0
+# Serial settings, only required when Zigbee2MQTT fails to start with:
+#   USB adapter discovery error (No valid USB adapter found).
+#   Specify valid 'adapter' and 'port' in your configuration.
+# serial:
+#     # Location of the adapter
+#     port: /dev/ttyACM0
+#     # Type of the adapter
+#     type: zstack
 
 # Advanced settings
 advanced: