All of my Arduino Uno not recognized in PC after using external power supply - Installation & Troubleshooting - Arduino Forum
![DC/USB 5V/3.3V power supply Kit for prototype board [ARDUINO]|Integrated Circuits| - AliExpress](https://ae01.alicdn.com/kf/U24903872e6a14fb29465ca8f1ece0fb6v/DC-USB-5V-3-3V-power-supply-Kit-for-prototype-board-ARDUINO.jpg_Q90.jpg_.webp "DC/USB 5V/3.3V power supply Kit for prototype board [ARDUINO]|Integrated Circuits| - AliExpress")
DC/USB 5V/3.3V power supply Kit for prototype board [ARDUINO]|Integrated Circuits| - AliExpress
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