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Google Cast: Share your screen without an app on an i3CONNECT display

This guide is for anyone using an i3CONNECT display with AllSync and a computer running Google Chrome. By the end, you’ll be able to cast Chrome tabs, media, or your entire screen to your i3CONNECT display.

Depending on your device, the cast feature might be called ‘Screencast’ or ‘SmartView’.

Chrome.jpg

Before you start

  • Make sure your computer and the i3CONNECT display are on the same Wi-Fi network.

  • You’ll need:

  • Open the AllSync display app by pressing on Subtract.png Present on the home-screen / side-bar.

    Electric Aqua Light UI.jpg

Cast a Chrome tab

If you’re on a Mac with macOS 15 or later, give Chrome screen access in your system settings before casting.

  1. Open Chrome on your computer.

  2. Click the More menu ellipsis-stroke-vertical-regular.png at the top right.

  3. Select file-arrow-down-regular.png Cast, save, and share 

  4. Then select screencast-regular.png Cast….

  5. Choose your i3CONNECT display from the list.

  6. To stop casting, click the Cast icon screencast-regular.png next to the address bar and select “Stop casting”.


Tip: On Cast-enabled sites (like Netflix), use the screencast-regular.png Cast button in the video player for the best quality and performance.

Learn more about Cast-enabled sites.

Screenshot 2026-03-30 at 10.04.21.png

Pin the Cast button for quick access

  1. In Chrome, click the More menu ellipsis-stroke-vertical-regular.png >  file-arrow-down-regular.png Cast, save, and share >  screencast-regular.png Cast….

  2. When the Cast button screencast-regular.png appears in your toolbar, right-click it and select “Always show icon”.

Cast your entire screen

  1. Open Chrome.

  2. Click the More menu ellipsis-stroke-vertical-regular.png >  file-arrow-down-regular.png Cast, save, and share >  screencast-regular.png Cast….

  3. Click Sources > Cast screen.

  4. Select your i3CONNECT display.

When casting your whole screen, audio may play on your computer instead of the display. For audio on the display, cast a tab instead.

Cast music or video files

  1. Open Chrome.

  2. Drag and drop your media file into a Chrome tab, or while in Chrome use:

    • Windows: Ctrl + O

    • Mac: command  command-solid.png  + O

  3. Click the More menu ellipsis-stroke-vertical-regular.png >  Cast, save, and share > Cast….

  4. Select your i3CONNECT display.

Troubleshooting

  • Display not found? Double-check both devices are on the same Wi-Fi network.

  • No sound on the display? Try casting a tab instead of your whole screen.

  • Performance issues? Use Cast-enabled sites for higher quality and less computer load.

  • Still stuck? If casting fails or you can’t see your display, see this article:
    Troubleshoot Google Cast issues in AllSync