diff --git a/docs/zh_CN/base/w5500PoE.md b/docs/zh_CN/base/w5500PoE.md
index 4fd4ea1b..1acf15a5 100644
--- a/docs/zh_CN/base/w5500PoE.md
+++ b/docs/zh_CN/base/w5500PoE.md
@@ -160,6 +160,10 @@ HT3.96连接器的 6 个引脚默认悬空，你可以根据需求选择连接RS
     </tbody>
 </table>
 
+   **Right side M-BUS pin definition**
+
+<img src = "assets/img/product_pics/module/Mbus_for_module_base.webp" width="20%">
+
 ## 原理图
 
 <img src="assets/img/product_pics/base/w5500PoE/w5500PoE.webp">