Why can't connect through a USB port?

When you use USB, I can't get my device is displayed in the preview of the device Panel and the iOS overview application does not display the preview image.

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If you use Windows, iTunes must be installed on your PC to the USB of the preview to work.  Connectivity USB of Preview is based on the Apple USB driver installed by iTunes. iTunes is installed on Mac by default. To verify that the Apple USB driver works correctly, connect your device to your computer and verify that you can see your device in iTunes.  If you can see your device in iTunes and still can connect using Preview, then try to temporarily disable your firewall software and see if the preview can connect. If disabling your firewall allows Preview to work, go into the settings of your firewall and see if an extract is blocked.

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    Hi Alba.

    1. who is the operating system installed on the computer?

    2. What is the brand and model of the computer?

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