Before You Begin

After installing any new part that plugs into the main logic board or any internal or external storage device, you must perform a reconfiguration boot so that your system is able to recognize the newly installed option(s).

Before you power on the system, make sure that the side access panel and all plastic outer panels and doors are properly installed.

Removing the side access panel or removable media assembly activates the system power interlock switches. This safety mechanism prevents all DC voltages (except 5V standby power) from reaching any internal component when the side panel or removable media assembly is removed and the front panel keyswitch is in the Power-on position.