... in USB' can connect with PC ,Mobile Phone , MP3 player,and iPod ,iPhone e USB slot on the front panel;auto ... play the MP3 files in USBwith class D Amplifier 5Wx2 ... Aux in , can connect with PC ,Mobile Phone , MP3 player,and iPod ,iPhone etcplay/pause,next,prev,vol-,vol+ 5 keys2 ... adaptors,DC 9V 1.5AMany colors selection: blue/ yellow computer speaker