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diff --git a/docs/en/1515/6060-push.md b/docs/en/1515/6060-push.md
index 80d44e33..6b10864d 100644
--- a/docs/en/1515/6060-push.md
+++ b/docs/en/1515/6060-push.md
@@ -15,7 +15,7 @@ This an application-level module, which implements a motion & robotic control an
- RS485
- 1515 Aluminium Profile frame
- 48 stepper motor: 2 phase 4 lines
-- Itinerary: 57.5mm
+- Itinerary: 57mm
- Input voltage: 12-24V
- Motor power: 10W
diff --git a/docs/en/atom/atom_motion.md b/docs/en/atom/atom_motion.md
index b846211e..17b14a76 100644
--- a/docs/en/atom/atom_motion.md
+++ b/docs/en/atom/atom_motion.md
@@ -115,7 +115,7 @@
@@ -124,11 +124,11 @@ Communication protocol: IIC(0x38)
To get example code, please [click here to download](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Module/GoPLUS2)
-Last updated: 2020-12-28
+Last updated: 2021-1-22
diff --git a/docs/en/module/nb-iot.md b/docs/en/module/nb-iot.md
index 2a490bef..b708ba61 100644
--- a/docs/en/module/nb-iot.md
+++ b/docs/en/module/nb-iot.md
@@ -70,7 +70,7 @@ Power Operation:
## Include
-- 1x NB-IoT module (Only China regional distribution SIM Card)
+- 1x NB-IoT module
## Applications
diff --git a/docs/en/module/servo2.md b/docs/en/module/servo2.md
index 0e6aad60..262ec757 100644
--- a/docs/en/module/servo2.md
+++ b/docs/en/module/servo2.md
@@ -10,6 +10,9 @@
The maximum total power output of dual channel is 35W (5V / 3.5A * 2), and the maximum output power of single channel is 25W (5V / 5A). When the battery base is used for power supply, the maximum output power is 5V / 2A. The module communicates with the host directly through I2C (the default address is 0x40) however the I2C address can be changed(0x40 - 0x47) through the dial switch. This also means that multiple Servo 2 modules can be stacked and used simultaneously. There is a power switch on the board to control the power supply of Servo 2.
+
+>The module must use the external power supply of DC interface when driving the servo. When using the AXP192 power management chip's main control (such as CORE2), the M-BUS power mode needs to be configured as input when the program is initialized.
+
## Product Features
- 16x actuator drive channel
@@ -98,7 +101,7 @@ To get the complete code, please click [here](https://github.com/m5stack/M5-Prod
\ No newline at end of file
diff --git a/docs/zh_CN/module/goplus2.md b/docs/zh_CN/module/goplus2.md
index bdb8d0f4..ac23870c 100644
--- a/docs/zh_CN/module/goplus2.md
+++ b/docs/zh_CN/module/goplus2.md
@@ -127,9 +127,11 @@
点击[此处获取](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Module/GoPLUS2)示例程序
+Last updated: 2021-1-22
+
diff --git a/docs/zh_CN/module/nb-iot.md b/docs/zh_CN/module/nb-iot.md
index 6b41b0a3..e4b58331 100644
--- a/docs/zh_CN/module/nb-iot.md
+++ b/docs/zh_CN/module/nb-iot.md
@@ -55,7 +55,6 @@
## 包含
-- 1x Nano IoT SIM卡
- 1x NB-IoT 模块
## 应用
diff --git a/docs/zh_CN/module/servo2.md b/docs/zh_CN/module/servo2.md
index de1605d6..4f4dd89c 100644
--- a/docs/zh_CN/module/servo2.md
+++ b/docs/zh_CN/module/servo2.md
@@ -8,6 +8,7 @@
**SERVO 2** 是M5Stack堆叠模块系列中的一款舵机驱动模块,内部采用PCA9685 16通道PWM控制器,可以同时控制16路舵机。采用直流电源输入(6-12V)设计,通过两片SY8368AQQC进行降压,双通道输出最大总功率35W (5V/3.5A*2),单通道输出最大功率25W(5V/5A),当使用电池底座供电时最高支持5V/2A输出。模块与主机直接通过I2C进行通讯(默认0x40),通过拨码开关可改变I2C地址(0x40~0x47),这也意味着多个SERVO2可以堆叠使用,板上有一个电源切换开关,可控制SERVO2电源通断。
+>该模块驱动舵机时必须使用DC接口外部供电。使用AXP192电源管理芯片的主控(如CORE2),在程序初始化时需要将M-BUS电源模式配置为输入。
## 产品特性
@@ -97,7 +98,7 @@
\ No newline at end of file
diff --git a/docs/zh_CN/unit/uwb.md b/docs/zh_CN/unit/uwb.md
index 0048db1d..f8ea9120 100644
--- a/docs/zh_CN/unit/uwb.md
+++ b/docs/zh_CN/unit/uwb.md
@@ -22,7 +22,7 @@
- 开发平台: Arduino, UIFlow(Blockly, Python)
- 2x LEGO 兼容孔
-## 套件清单
+## 包含
- 1x UWB Unit
- 1x HY2.0-4P线缆