Final answer:
To download COM 3 or COM 4 in Arduino, open the software, select the port, and connect the board to the computer.
Step-by-step explanation:
To download COM 3 or COM 4 in Arduino, follow these steps:
- Open the Arduino software.
- Go to the Tools menu and select 'Port.'
- A list of available ports will appear. Look for COM 3 or COM 4 options.
- If the desired port is not listed, you can check the device manager to see if the port is recognized by the computer.
- Connect the Arduino board to the computer via USB. Windows will automatically install the necessary drivers for the board.