~upd~ Download Driver Arduino Uno Ch340 May 2026

You should always download the driver from reputable sources to avoid malware.

Once the driver is installed, open the Arduino IDE and follow these steps: Go to and select Arduino Uno .

The CH340 is a USB-to-Serial adapter chip. It acts as a bridge between your computer’s USB port and the Arduino’s microcontroller. Because this chip is manufactured by WCH (a third-party company), Windows, macOS, and Linux often do not include the driver by default. Where to Download the Driver download driver arduino uno ch340

A popup should say "Driver install success!"

💡 Avoid using USB hubs. Plug the Arduino directly into a port on your computer's motherboard. You should always download the driver from reputable

Get the .pkg or .dmg file specifically for Mac.

💡 Many cheap micro-USB or USB-B cables are "charge-only" and don't carry data. If the board lights up but doesn't show in Device Manager, swap the cable first. It acts as a bridge between your computer’s

Installing the CH340 driver is the most common hurdle for new Arduino enthusiasts. While official Arduino Uno boards use a standard USB chip, many affordable "clone" boards use the CH340G chip to keep costs low. Without the specific driver, your computer won't recognize the board, and you'll see "USB Serial Controller" with a yellow warning icon in your Device Manager.