Can I reassign my Arduino Uno COM Port? The Arduino SW, under Tools, identifies my Uno as COM Port 3. However, COM Port 3 on my computer is in use by a chip set. My computer assigned COM Port 4 to my Arduino Uno.

Can I reassign my Uno to COM Port 4?

Edit: This question also applies to people who don't have administrative privileges. They do not have privileges to change the port via Windows Device Manager.
If the Arduino IDE identified your Uno as COM Port 3, your computer most likely has already assigned COM Port 3 to your Uno. You can double check the port assignment in Device manager > Ports.