3 x HDMI IN: Video input USB IN: Video input (Please note in some usb webcams, only video can be captured.) HDMI OUT: Video output Ethernet: Connect to Internet by Ethernet cable AUDIO IN: Connect with lavalier microphone or mixer TYPE-C 3.0: A fully functional interface supports input TYPE-C: Power connector LINE IN: Stereo, connect to electric guitar or synthesizer MIC IN: Mono, connect to microphone for recording AUDIO OUT: Connect with 3.5mm monitor headphones SIM Card Slot: Insert SIM Card to get into Internet