... Hottest Computer Speaker support TF, /USB/U disk 1)ROHS,CE,FCC 2)With USB ... computers, mobile phones, MP3, MP4, DVD, CD, U plate and the audio equipment outside put.2. Applicable equipment ... : SD card, U dish3. Rated power: 4 W * 24. Peak power ... Support MP3 format music files.3. Support SD card, U disk file playback.4. Support external MP3 / MP4 / computer ...