diff --git a/docs/en/module/proto.md b/docs/en/module/proto.md
index a4a5aa68..cf29c55d 100644
--- a/docs/en/module/proto.md
+++ b/docs/en/module/proto.md
@@ -29,7 +29,7 @@
| IO19(MISO) | IO26(DAC1) |
| IO18(EXT\_SCK) | 3V3 |
| IO3(U1\_RX) | IO1(U1\_TX) |
-| IO16(U1\_RX) | IO17(U2\_TX) |
+| IO16(U2\_RX) | IO17(U2\_TX) |
| IO21(I2C\_SDA) | IO22(I2C\_SCL) |
| IO2 | IO5 |
| IO12(I2S\_SCLK) | IO13 |
diff --git a/docs/en/unit/esp32cam.md b/docs/en/unit/esp32cam.md
index 40667248..dfc51fe1 100644
--- a/docs/en/unit/esp32cam.md
+++ b/docs/en/unit/esp32cam.md
@@ -24,17 +24,9 @@ The hardware also comes with some reserved weld pad, just in case you want put t
- **Digital silicon microphone (SPM1423)**
- Lipo Battery power pins
-**ESP32CAM** is the most popular pattern among the M5 camera series so far. If you need more storage please check M5Camera. If you need fisheye lens, please check M5CameraF.
-**Note: ESP32CAM is named differently when different hardware is selected. They follow the rules below.**
-
-*ESP32CAM_#_#... means optional hardware name follows "ESP32CAM".*
-
-* If configured with MPU6050, will be named ESP32CAM_6050
-* If also configured with microphone, will be named ESP32CAM_6050_MIC
-* If also configured with BME280, will be named ESP32CAM_6050_MIC_BME280
## Product Features
diff --git a/docs/en/unit/m5camera.md b/docs/en/unit/m5camera.md
index e4d0877e..ca15efa6 100644
--- a/docs/en/unit/m5camera.md
+++ b/docs/en/unit/m5camera.md
@@ -85,7 +85,7 @@ The hardware also comes with some reserved weld pad, just in case you want put t
## PinMap
-**There are two versions of M5Camera Unit: A Model and B Model.**
+
**Camera Interface PinMap**
diff --git a/docs/zh_CN/module/proto.md b/docs/zh_CN/module/proto.md
index 3c1e01cd..3370c993 100644
--- a/docs/zh_CN/module/proto.md
+++ b/docs/zh_CN/module/proto.md
@@ -29,7 +29,7 @@
| IO19(MISO) | IO26(DAC1) |
| IO18(EXT\_SCK) | 3V3 |
| IO3(U1\_RX) | IO1(U1\_TX) |
-| IO16(U1\_RX) | IO17(U2\_TX) |
+| IO16(U2\_RX) | IO17(U2\_TX) |
| IO21(I2C\_SDA) | IO22(I2C\_SCL) |
| IO2 | IO5 |
| IO12(I2S\_SCLK) | IO13 |
diff --git a/docs/zh_CN/unit/esp32cam.md b/docs/zh_CN/unit/esp32cam.md
index 8d706378..1868ff6d 100644
--- a/docs/zh_CN/unit/esp32cam.md
+++ b/docs/zh_CN/unit/esp32cam.md
@@ -23,15 +23,6 @@
- **数字硅晶麦克风 (SPM1423)**
- 电池插座
-**ESP32CAM** 是M5相机系列中一款广受欢迎的模块,不管是从性能或是性价比上都有着出色的表现.M5相机系列还有一些其他的相机产品能够应对项目中的不同需求，如果你需要更多存储空间，请查看M5Camera(Link)，如果您需要鱼眼镜头，请查看M5CameraF(Link).
-
-**注意：选配不同硬件时，ESP32CAM 的命名不一样，遵循以下规则**
-
-*ESP32CAM_#_#... 即 ESP32CAM 后跟选配的硬件。*
-
-* 如果选配 MPU6050，则命名为 ESP32CAM_6050
-* 如果还选配了麦克风 SPQ2410，则命名为 ESP32CAM_6050_MIC
-* 如果还选配了温湿度气压传感器 BME280，则命名为 ESP32CAM_6050_BME280