Some laptops automatically switch to VGA output when the computer detects a VGA device connected to the VGA port. Locate the 15-pin VGA port on the back or side of your laptop. Align your monitor's ...

A graphics card (display adapter) that provides VGA resolution. Most PC graphics cards provide base level VGA resolutions even if they do not provide the actual VGA connector. See VGA. THIS DEFINITION ...

I'm sure there is a spec somewhere (VESA or something) but here are a couple of references. Power is watts = volts * amps. Even though there was a +5V pin on a VGA connector, it may not be suitable ...