Here’s a scary scenario: you’ve spent hours and hours creating the perfect Keynote presentation for your job, and you show up to the room you’re going to show it off, only to find that you’ve forgotten your little white dongle that connects the iPad to the big screen TV in that room. Uh oh. Luckily, there IS an Apple TV sitting there (conveniently). Lucky you, you get to keep your job. Getting the iPad signal up to the big screen isn’t quite as intuitive as connecting it to a HDMI cable, but it is pretty simple.