A:AnswerThe TCL 43Q651G includes a USB port, but it is not designed or advertised as a full media player for movie files with advanced audio formats. It supports basic USB media playback such as JPEG/MP3, and its listed audio passthrough formats include Dolby Atmos, Dolby Digital+, Dolby Digital, and PCM. Because DTS audio is not listed as a supported passthrough or decoding format, DTS 7.1 files from your Blu-ray collection may not play with sound directly from a USB drive.
Your DVD files with AC-3/Dolby Digital audio are more likely to be compatible, but playback can still depend on the file container, codec, and how the file was encoded. For the most reliable playback of a movie library with DTS audio, we recommend using an external media player, Blu-ray player, or streaming/media device that can decode or convert DTS audio to PCM or Dolby Digital before sending it to the TV. Hope this helps! Thank you, TCL Customer Support
A:AnswerThe buttons located on the lower portion of the Remote are our partner buttons. They are designated at a factory level with some variation. Hope this helps! Thank you, TCL Customer Support
