That will depend, very much, on the motherboard you have. The Intel Core I5-6400 has the Intel® HD Graphics 530 so connecting to the monitor depends on what inputs the monitor has and what outputs the motherboard has.
-Wolf sends
Note: The on-board graphics will not perform any near the performance your Radeon 480 graphics card will. Typical computer use, sure. Any types of games? Forget about it.