How to use USB Drive and SD card to play songs?
Long time ago, USB Drive was mainly used to store computer documents, with the U disk storage capacity increases, people began to develop more products that can be applied to the USB Drive. The MP3 reader and MP4 reader were developed, and the plugin MP3 player.
USB SPEAKER is featured of the card reader MP3 portable speaker inside. USB SPEAKER is smaller, but the sound to meet the individual in a small area broadcast, sound quality is good, and do not like MP3, MP4 player, always wearing a headset. It also can meet the need of broadcast for a group of people in a small area.
USB Drive and SD card could store computer files, MP3 files, MP4 movie files, you should ensure that there is no virus, because the virus might damage the USB Drive and affect the USB Speaker. Files should be copied to the root directory, not the internal folders, or USB SPEAKER could not be read. Why USB speaker does not work?
Usually, USB drive or SD card can plug directly into USB SPEAKER of the USB PORT or SD card PORT, generally USB SPEAKER support hot swap, that is, the status of the USB SPEAKER is working while inserting USB Drive or SD cards, but sometimes improperly allocated plug contacts may be bad it will not be broadcast. Proper operation is to turn off the USB SPEAKER for the power switch OFF state, the USB drive or SD card plugged in and then open the power so that we can ensure that the USB SPEAKER to resume normal playback songs. Autoplay generally, if you want to choose other songs, you can operate by remote control.

[...] rest time can listen to music, such as USB SPEAKER is a good choice. The songs copied to the U disk or SD card, it can hold more than 400 songs in 2G U-disk, you can also copy some jokes audio to the U disk or [...]
[...] When use the U-disk and SD card play songs.the USB SPEAKER voice open to the maximum, playback when fully charged than the sound become smaller. Because inset lithium battery voltage is not enough, USB SPEAKER amplifier inside the IC power supply not be enough, while the output power will be smaller, so speaker is whispering.When the USB SPEAKER peak sound, there will be numb sound Ma tone phenomenon, because the inset lithium battery voltage is not enough, the voice of the peak because of insufficient supply of electricity distortion, so the sound tone hemp. [...]
[...] would have no function. If the USB SPEAKER button on the functional, can used the panel key to play USB or SD card songs, but only non-functional remote control, there may be low batteries or remote control is [...]