diff --git a/docs/Odin1/2. HW Description_.md b/docs/Odin1/2. HW Description_.md
index a615621..b7d9c49 100644
--- a/docs/Odin1/2. HW Description_.md	
+++ b/docs/Odin1/2. HW Description_.md	
@@ -23,7 +23,7 @@ nav_order: 4
 | ------------------ | -------- | ------- | -------------- | ----------- | -------------- |
 | 1                | Power+ | Power | DC 9–24V    | 红(正极)  | 电源线       |
 | 2                | FSYNC  | FSYNC | 双向同步信号 | 绿        | 硬同步信号线 |
-| 3                | GP IO  | GP IO | 双向同步IO   | 蓝        | GP IO        |
+| 3                | GP IO  | GP IO | 双向同步IO   | 白        | GP IO        |
 | 4                | Ground | Power | Ground       | 黑 (负极) | 电源线       |
 
 ## 2.3 核心部件