A:AnswerIt only has one HDMI and one VGA input so a stand alone receiver for 4 cameras would not be possible. But if your security system uses a DVR or similar type of receiver then it should have those outputs. Just run the HDMI or VGA cable to the monitor like you would from your PC and you're all set, it's pretty much plug and play.
A:AnswerYou may have to get a bit techy by troubleshooting physical connections and settings, then make sure drivers and settings are up to date and optimized.
Have a look at a tutorial or two on youtube.
A:AnswerThe monitor isbessentially plug and play. I had it working straight out of the box with an HDMI connection. As long as your PC had and HDMI port, this monitor should work quite well.