4. Two monitors
Having two monitors are great because they let you run more applications at once instead of switching between tabs and programs.
One screen keeps your primary program in view, while the second screen runs your email and chat programs open so you can stay in contact with your team.
For best workplace ergonomics, put your primary monitor slightly to one side. Place it at arm’s-length, with the top at eye-height. Put your second monitor beside it, angled slightly toward you.