diff --git a/README.md b/README.md
index 68389d7..95bdb55 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ As an alternative to Wi-Fi (which is available on any supported ESP32), the foll
 - [M5Stack Atom POE](https://docs.m5stack.com/en/atom/atom_poe)
 - [M5Stack PoESP32 Unit](https://docs.m5stack.com/en/unit/poesp32)
 - [LilyGO-T-ETH-POE](https://github.com/Xinyuan-LilyGO/LilyGO-T-ETH-POE)
-- [GL-S10](https://www.gl-inet.com/products/gl-s10/)
+- [GL-S10 (Revisions 2.1, 2.3 / 1.0 is not supported)](https://www.gl-inet.com/products/gl-s10/)
 
 <b>Note for users upgrading from Nuki Hub 8.21 or lower:</b><br>
 Please go to "MQTT and Network Configuration" and select "Wi-Fi only" as the network device (unless you use other network hardware).