ITEM NAME:BY8301-16P SSOP2 MP3 aduio serial voice SPI FLASH module 3W amplifier micro Gk.Amplifier power:connect 2W / 4ÃŽ © or 1W / 8ÃŽ © speaker. USB interface:2.0 standard (Micro USB interface). UART interface:Standard serial port, 3.3V TTL level,baud rate 9600. Quiescent Current:15MA (entire module).