diff --git a/Menu-options-explained.md b/Menu-options-explained.md
index 3c4747e..4d98b72 100644
--- a/Menu-options-explained.md
+++ b/Menu-options-explained.md
@@ -147,7 +147,7 @@ Set to XDRGTK or RDS Spy. When XDRGTK baudrate is set to 115200 bps. When set to
 Enable or disable the WiFi connection. When connection, your IP address is shown on this line.
 
 ### Configure Wi-Fi
-Set the radio in Wi-Fi configuration. Follow the instructions to set the Wi-Fi connection with the help of your smartphone. You can also set the password for XDRGTK connection over IP.
+Set the radio in Wi-Fi configuration. Follow the instructions to set the Wi-Fi connection with the help of your smartphone. You can also set the password for XDRGTK connection over IP. Note: only 2.4 GHz Wi-Fi is supported.
 
 ### Stationlist Client IP
 When you use Stationlist, set the IP address of the device which runs Stationlist (for example, the IP address of your PC)