Arduino Uno Drivers ((exclusive))

Download the CH340 macOS driver from the manufacturer's website. Run the .pkg installer installer package. Restart your Mac if prompted.

| Your OS | Driver needed? | Notes | |---------|----------------|-------| | | ✅ Yes (manual) | Legacy CH340 or official Uno (FTDI/16U2) | | Windows 10 / 11 | ⚠️ Usually automatic | May fail for CH340 clones | | macOS | ❌ No (built-in) | Just works (USB-serial class) | | Linux | ❌ No (built-in) | Kernel CDC ACM driver loads automatically | arduino uno drivers

: Some older or specialized versions may use FTDI chips, which require the VCP (Virtual COM Port) drivers. How to Install Official Drivers (Windows) Download the CH340 macOS driver from the manufacturer's

If the onboard LED (pin 13) blinks, you’re done ✅ | Your OS | Driver needed

While the driver installation process can be tedious, it is a one-time setup.

Recent macOS versions include built-in support for official boards and many CH340 clones, but older setups or specific clones require manual configuration. For Official Boards Connect the board via USB. Open Arduino IDE. Check for a device named /dev/cu.usbmodemXXXX . For CH340 Clones