14PPC-123 User's ManualFigure 2-3: Rear view of the panel PCFigure 2-4 shows the I/O section and power switch of the panel PC.Figure 2-4: Tilted rear view of the panel PCUSB portsMain power switchAC inletPCI/ISA expansionslot coverPS/2 mouse andkeyboard connectorEthernet jackContrast adjust knobBrightness adjust knobLine-out jackLine-in jackMicrophone-in jackGame portSerial portsParallel portVGA port