What You Need for Classroom Technology


Most new laptops come with HDMI ports. This is the preferred method to connect to our media gateways because it allows for the clearest picture and, in most cases, can transmit audio as well.

Most Macs require an adapter to use HDMI. Some more recent models have direct HDMI ports.


If you want to use HDMI and your computer does not have an HDMI port, then you must provide your own adapter. If needed, an adapter or adapter cable such as the one below can often be purchased for under ten dollars.

Mini DisplayPort to HDMI Adapter -> http://amzn.com/B009K62HQ0

Mini displayport  Mini displayport cable

Please note that certain macs do not support audio over HDMI. The list below signifies which mac models DO NOT support audio via HDMI:

  • iMac (Early 2009) and (Mid 2009)
  • Mac Mini (Early 2009) and (Late 2009)
  • Mac Pro (Early 2009)
  • MacBook (Late 2009)
  • MacBook (13-inch Aluminum Late 2008)
  • MacBook Pro (late 2008), (Mid 2009), and (Early 2009)
  • MacBook Air (Late 2008) and (Mid 2009)

Newer versions support audio through HDMI.


Our classrooms also support VGA. Most computers support VGA as well. However, VGA does not support audio, and the picture is less clear than HDMI. If you want to transmit audio, you will need to use both a VGA cable as well as a 3.5mm audio cable (seen below). These cables are usually available in electronic classrooms.

VGA port 3.5mm audio cable

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