Connecting your laptop to the classroom technology is now accomplished through ONE provided USB cable, (with a tethered adapter, if needed)  All connections (display, projector and internet connection) go through this single connection.  Here's how to get connected.

Caveat: a small number of classrooms do not have an included computer don't have this "all powerful" single cable connection.  Those classrooms provide a cable that connect to single technologies, like a Meeting OWL or wall-mounted display.

Did you catch the part about internet connection?  This means that wi-fi may not be your friend -- on purpose.