That's why the IOgear 4 port HDMI switcher is such a neat little device. You don't need buttons; it does all the work for you. The switch itself is tiny; one of the problems I had hooking it up ...

You'll need an HDMI cable for each device, and another to connect the switcher to a TV, but ultimately it gives you more control over how you use all your various devices. Here are our favorite ...