... Computer Speaker support TF, /USB/U disk 1)ROHS,CE,FCC 2)With USB ... Application: notebook 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 ... excellentworkmanship.2. Support MP3 format music files.3. Support SD card, U disk file playback.4. Support external MP3 / MP4 / ...