BPC-7971 User's Manual10USB12:Signal Name Pin Signal NameVCC_USB3 1 2 VCC_USB3USBD_N9 3 4 NCUSBD_P9 5 6 NCGND 7 8 GNDGND 9 10 GNDGND 11 12 GNDLAN LED Status:LILED(Green) Function ACTLED(Yellow) FunctionON 100/1000M link Flash Data transferOFF 10M link/close OFF No data2.5.3 Audio Port(SPEAKER、 MIC)Adopt ALC662 audio control chip,the green one is audio output port(Line-out),andUSB1-4LANx2USB12