5-41 Service and MaintenanceMainboard Installation1. Align the left side connectors of the mainboard to the slots on the lower case, and then push toinstall the mainboard.TIP: Ensure the LVDS, DC-In, speaker, IO board, and LED board cable connectors are abovethe mainboard before installing the mainboard.Figure 5:53. Connecting the DC-In Cable2. Attach the screw to secure the mainboard to the lower case.Figure 5:54. Securing the Mainboard Screw