2-14 Chapter 22.3.12. External I/O Panel• Mouse: PS/2 mouse connector.• Keyboard: PS/2 keyboard connector.• LPT1: Parallel port connector.• COM1: Serial port connector.• VGA1: Monitor signal connector.• USB1/USB2: USB 2.0 connectors.• LAN1:10/100Mbps LAN connectors.• AUDIO:Mic In: Connects to the plug from external microphone.Line In: Connects to the line out from external audio sources.Line Out: Connects to the front left and front right channel in the 5.1-channelor regular 2-channel audio system.SG-80 Series