diff --git a/docs/en/product_documents/m5stack-core/m5core_basic.md b/docs/en/product_documents/m5stack-core/m5core_basic.md
index 82568639..d1b7e584 100644
--- a/docs/en/product_documents/m5stack-core/m5core_basic.md
+++ b/docs/en/product_documents/m5stack-core/m5core_basic.md
@@ -90,6 +90,8 @@ The a Bottom board on the back of M5Core. It's designed for expanding gpio on M-
 -  Type-C USB Cable
 -  User Manual
 
+### 
+
 ## DOCUMENTS
 
 -  **[Schematic](https://github.com/m5stack/M5-3D_and_PCB/blob/master/M5_Core_SCH%2820171206%29.pdf)**
@@ -103,6 +105,8 @@ The a Bottom board on the back of M5Core. It's designed for expanding gpio on M-
 -  **<mark>Quick Start</mark>**
   - Arduino - [MacOS](/en/quick_start/m5core/m5stack_core_get_started_Arduino_MacOS) - [Windows_64](/en/quick_start/m5core/m5stack_core_get_started_Arduino_Windows)
   - [MicroPython](/en/quick_start/m5core/m5stack_core_get_started_MicroPython)
+  
+- **[The difference between M5Cores](https://github.com/m5stack/M5-Schematic/blob/master/Core/hardware_diff_between_m5cores.md)**
 
 <figure>
   <img src="assets/img/product_pics/core/basic/basic_01.jpg" alt="basic_01" width="500px" height="500px">