Multi-Monitor Guide - Check if your system already supports two monitors

Check if your system already supports two monitors

Most video cards have support for two monitors, for example the card might have VGA + DVI outputs, and maybe a TV output like HDMI.

Output types:

VGA: analog output, used by CRT and also some flat panel monitors and TVs
DVI and DisplayPort: digital outputs used by flat panel monitors
composite, S-video and component: analog outputs used by TVs
HDMI: digital output used by high-definition TVs

A video card with more than 2 outputs doesn't necessarily support 3 or more monitors, most cards only support 2 monitors, but let you use either 2 monitors or 1 monitor + 1 TV.

Laptops usually support using the internal monitor + 1 external monitor via an output on the back or side of the laptop:

Laptop with VGA output on the back

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