How can I display a Chromebook screen on a projector or monitor?

posted Jan 19, 2018, 12:52 PM by Granger Meador   [ updated Jan 10, 2019, 5:01 PM ]

HDMI ports on Dell 3120, 3180, and Lenovo Chromebooks

These older devices have full-size HDMI ports to output video and sound to external displays and speakers.

In a conference room or other room which lacks a dedicated computer:

  • If the monitor or projector has HDMI ports, you can use a full-size HDMI cable with male leads on both ends to connect the Chromebook.
  • If the monitor or projector only supports the older VGA video port, have a site tech troubleshooter file a Help Desk ticket to request an HDMI adapter dongle for use in the conference room, library, etc.
HDMI vs VGA

In the classroom:

First, consider if you even need to hookup the Chromebook. You can show most things in the Google Chrome browser on your teacher station that you would show on a Chromebook. Students can also login to their Google accounts in your desktop browser to display things from their Google Drive or Google apps.

But if you do need to display your own Chromebook or a student's Chromebook screen:

  • Technology Services does NOT provide dongles and cabling to connect Chromebooks in classrooms since teachers can use Google Cast for free. However, if you wish to invest in a dongle and cabling at your own risk and expense, Amazon links and instructions are shown below.

Technology Services does not support hardwired connections in classrooms to Chromebooks. But if you find Google Cast is simply too frustrating, you can invest at your own risk and expense in a hardware solution.
  
  • To connect to a modern monitor or in newer construction with HDMI wall ports, you just need a full-size HDMI cable to make the connection:

  • For most classrooms with older VGA wall ports and stereo RCA audio ports:

Many HDMI-to-VGA converter dongles have NOT been reliable with our Chromebooks. We only recommend the HD2VGAA2 model from Star Tech.

You will need a VGA cable long enough to reach from the dongle on the Chromebook to the wall port.

Ports
For sound, you will likely need a cable that has a male 3.5 mm audio jack at both ends that is long enough to reach from the hole in the dongle attached to the Chromebook, or from the Chromebook’s headphone jack, to the wall port.
However, if the wall plate has no 3.5 mm audio jack and ONLY has the red and white RCA stereo audio jacks, you need a cable with a male 3.5 mm audio jack at one end and the red and white male RCA audio jacks at the other end, and it must be long enough to reach from the dongle on the Chromebook, or its headphone jack, to the wall port.

USB-C DisplayPorts on Dell 5190 Chromebooks

Newer devices have USB-C ports which can be used to plug in a charger OR output audiovisual signals.

In a conference room or other room which lacks a dedicated computer:

  • If there is no USB-C dongle in the room, have a site tech troubleshooter file a Help Desk ticket to request a USB-C to HDMI/VGA adapter dongle for use in the conference room, library, etc.
USB-C dongle
In the classroom:

First, consider if you even need to hookup the Chromebook. You can show most things in the Google Chrome browser on your teacher station that you would show on a Chromebook. Students can also login to their Google accounts in your desktop browser to display things from their Google Drive or Google apps.

But if you do need to display your own Chromebook or a student's Chromebook screen:

  • Technology Services does NOT provide dongles and cabling to connect Chromebooks in classrooms since teachers can use Google Cast for free. However, if you wish to invest in a dongle and cabling at your own risk and expense, Amazon links and instructions are shown below.

Technology Services does not support hardwired connections in classrooms to Chromebooks. But if you find Google Cast is simply too frustrating, you can invest at your own risk and expense in a hardware solution.

USB-C dongle
You will need a USB-C dongle that converts the audiovisual signals from a USB-C port on the Chromebook into an HDMI signal or a VGA video signal and analog audio signal for 3.5 mm or RCA audio jacks.
Older classrooms have VGA ports instead of HDMI, so you will need a VGA cable long enough to reach a wall port. For sound, you will need a 3.5 mm audio cable long enough to reach that wall port.
Ports
For sound, you will likely need a cable that has a male 3.5 mm audio jack at both ends that is long enough to reach from the hole in the dongle attached to the Chromebook, or from the Chromebook’s headphone jack, to the wall port.
However, if the wall plate has no 3.5 mm audio jack and ONLY has the red and white RCA stereo audio jacks, you need a cable with a male 3.5 mm audio jack at one end and the red and white male RCA audio jacks at the other end, and it must be long enough to reach from the dongle on the Chromebook, or its headphone jack, to the wall port.
Some newer classrooms have HDMI connections. For those, you only need a full-size HDMI cable that is male on each end to carry both video and audio signals: