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Consequently, how many external monitors can MacBook Pro support?

The new Retina MacBook Pro is an incredible piece of hardware. On its spec sheets, Apple claims it can support "up to two external displays", but it turns out that's bull. In fact, it can support three external monitors.

One may also ask, how do you attach two monitors to a laptop? 1) Plug the cable of the first external monitor to the correct video port on your laptop. So I plug the VGA cable of the first external monitor into the VGA port on my laptop. 2) Plug the cable of the second external monitor to the other correct port on your laptop.

Just so, how do I get my Mac to recognize my second monitor?

If you are using an Apple adapter, try the following:

1. Connect your monitor and Mac and open System Preferences > Displays.
2. Press the Alt/option key. This should make the Detect Displays button appear.
3. Click on Detect Displays. This should cause your Mac to see the external monitor.

Can you hook up two external monitors to a laptop?

It's possible, at least technically, to add as many monitors as your laptop has USB ports in this fashion. For quick and cheap multiple monitor setups, it's best to combine your laptop's own screen, one monitor attached with HDMI/DisplayPort/DVI, and one on a USB adapter.