diff --git a/docs/en/module/usb.md b/docs/en/module/usb.md
index e69de29b..f534ff28 100644
--- a/docs/en/module/usb.md
+++ b/docs/en/module/usb.md
@@ -0,0 +1,85 @@
+# USB
+
+
+
+***
+
+:memo:**[Description](#Description)** :octocat:**[Example](#Example)** :electric_plug:**[Schematic](#Schematic)** 🛒**[Purchase](https://www.aliexpress.com/store/product/M5Stack-New-USB-Module-USB-HOST-HID-with-MAX3421E-SPI-Interface-Output-5-Input-5-Compatible/3226069_32961627365.html?spm=2114.12010615.8148356.4.6c042548sAUbGi)**
+
+## Description
+
+USB模块是一款USB控制器，内置了USB芯片MAX3421E。堆叠了M5Core之后，通过通信速率可高达26MHz的SPI接口与M5Core连接，即可作USB外设又可作USB主机。
+
+## Feature
+
+- 高达26MHz的SPI接口
+- 8路GPIO输入输出
+- 内置锂电池接口
+
+## Including
+
+- 1x USB模块
+
+## Application
+
+- USB键盘记录器
+- M5Core读写U盘
+
+## Related Link
+
+- **[Offical Video](https://www.youtube.com/channel/UCozgFVglWYQXbvTmGyS739w)**
+
+- **[Forum](http://forum.m5stack.com/)**
+
+- **[Datasheet]** - [MAX3421E](https://www.sparkfun.com/datasheets/DevTools/Arduino/MAX3421E.pdf)
+
+## Example
+
+*以下仅为用法示意，并不完整。如果需要完整例程请点击[这里](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Module/USB/Arduino)。*
+
+烧录例程`usb_mouse.ino`，USB鼠标接入模块之后，按住左键并拖动鼠标描绘白色线条；按住右键，描述绿色线条；按下中间滚轮键，清屏。
+
+```arduino
+#include
+#include
+#include
+#include
+#include
+#include
+#include "M5Mouse.h"
+
+// new objects
+USB Usb;
+USBHub Hub(&Usb);
+HIDBoot HidMouse(&Usb);
+MouseRptParser Prs;
+
+// initialization
+M5.begin();
+Usb.Init();
+HidMouse.SetReportParser(0,(HIDReportParser*)&Prs);
+
+// handle event coming from usb device
+Usb.Task();
+if(Usb.getUsbTaskState() == USB_STATE_RUNNING)
+{
+ Mouse_Pointer(mou_px, mou_py);
+ mou_px = 0;
+ mou_py = 0;
+ /* left button pressed: draw white point */
+ if (mou_button == 1)
+ M5.Lcd.drawCircle(StaPotX, StaPotY, 1, WHITE);
+ /* right button pressed: draw green point */
+ if (mou_button == 2)
+ M5.Lcd.drawCircle(StaPotX, StaPotY, 1, GREEN);
+ /* middle button pressed: clear screen */
+ if (mou_button == 4)
+ M5.Lcd.fillScreen(BLACK);
+}
+```
+
+
+
+## Schematic
+
+
\ No newline at end of file
diff --git a/docs/en/unit/gps.md b/docs/en/unit/gps.md
index d619dc03..9bef7c9a 100644
--- a/docs/en/unit/gps.md
+++ b/docs/en/unit/gps.md
@@ -22,14 +22,14 @@
- With two Lego plugin holes on the Unit, it could be more easier to compatable with Lego mountings
-## 应用
+## Application
- Vehicle location
- Intelligent Law enforcement location
-## 相关链接
+## Related Link
-- **[Offical Video](https://i.youku.com/i/UNjE1ODA2MzE0OA==?spm=a2hzp.8253869.0.0)**
+- **[Offical Video](https://www.youtube.com/channel/UCozgFVglWYQXbvTmGyS739w)**
- **[Forum](http://forum.m5stack.com/)**
diff --git a/docs/index.md b/docs/index.md
index fe983e5a..04c587e6 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -47,9 +47,7 @@
**Expansion Modules**
-[](en/module/battery) [](en/module/proto) [](en/module/plus)
-
-
+[](en/module/battery) [](en/module/proto) [](en/module/plus) [](en/module/usb)