Thing to consider, when using monitors (instead of TVs) with consoles, is the sound output.
Because the single HDMI cable would be carrying both the video + sound signal, you need to determine whether you should:
Connect your speakers with the monitor (if your monitor has an audio output jack); or
Use an optical cable for sound output (if you have a PS4 Pro or original PS4, PS4 slim doesn't have optical output); or
In absence of both, use HDMI audio splitter or connect headphones with PS4 controller and turn on all audio output on that.
