Article ID : 00202775 / Last Modified : 04/06/2019

The USB device is not recognized on my HT-RT3

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If the USB device is not recognized, try the following:

  1. Turn the system off.
  2. Remove and reconnect the USB device.
  3. Turn the system on.


  • Make sure that the USB device is securely connected to the (USB) port.
  • Check if the USB device or a cable is damaged.
  • Check if the USB device is on.
  • If the USB device is connected via a USB hub, disconnect it and connect the USB device directly to the Subwoofer.

Check the files are in the supported format:


MP3 (MPEG-1 Audio Layer III).mp3
AAC.m4a, mp4, 3gp
WMA9 Standard.wma


MPEG4.avi, .mp4, .3gp


  • Some files may not play depending on the file format, the file encoding, or the recording condition.
  • Some files edited on a PC may not play.
  • The system does not play coded files such as DRM and Lossless.
  • The system can recognize the following files or folders in USB devices:
    • up to 200 folders
    • up to 150 files/folders in a single layer
  • Some USB devices may not work with this system.
  • The system can recognize Mass Storage Class (MSC) devices.