diff --git a/Firmware-Compatibility.md b/Firmware-Compatibility.md
index 4588f7e..d72b435 100644
--- a/Firmware-Compatibility.md
+++ b/Firmware-Compatibility.md
@@ -57,8 +57,8 @@ This is the pin mapping this firmware is using, you might have to adapt it to yo
 
 # Other boards
 ## Artery boards
-For boards with AT32F403RCT6 or AT32F413RCT7 chips, please check following [Firmware](https://github.com/cloidnerux/hoverboard-firmware-hack).<br>
-
+Those boards are the cheapest and more common ones available on Aliexpress now, it has a AT32F403RCT6 or AT32F413RCT7 chip, but is not compatible with FOC firmware. Please check following [Firmware](https://github.com/cloidnerux/hoverboard-firmware-hack).<br>
+ 
 <img src="https://raw.githubusercontent.com/cloidnerux/hoverboard-firmware-hack/master/pinout.png" width="700">
 
 ## Split Boards