Below the back::LAN OUT *1,LAN IN*1,HDMI2*2,VGA*1,VGA AU IN*1,MIC IN*1,AV IN*1,AV OUT*1,SPDIF OUT*1.COAXIAL*1.DP*1. Behind the side:EARPHONE OUT*1,RS232*1,HDMI*1,TF*1,USB2.0*1,USB3.0*1,TP USB OUT*1,HDMI OUT*1. Front:USB3.0*3,HDMI*1,TP USB OUT*1,TYPE C*1