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@@ -212,7 +212,7 @@ Learn how to use RT-Thread ENV, click [Here](https://github.com/RT-Thread/rtthre
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-### 4.1 How to use USB virtual com
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+### 4.1 How to use USB virtual com as a console device
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#### 4.1.1 Step 1
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@@ -253,7 +253,7 @@ vconsole_switch(dev);
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#### 4.1.5 Step 5
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-Re-plug the USB cable and you will find a new serial (virtual com) device is found in your computer. If you reset or reboot the blue pill board, you still need to re-plug the USB cable.
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+Download the new program to your blue pill board. Re-plug the USB cable and you will find that a new serial (virtual com) device is found in your computer. Now, you can get rid of the UART-USB adapter by using USB as a console and send commands through USB cable. If you reset or reboot the blue pill board, you still need to re-plug the USB cable.
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Meco Man