Installing System Components 12511 Replace the cooling shroud. See "Installing the Cooling Shroud" onpage 102.12 Close the system. See "Closing the System" on page 79.13 Reconnect the system to its electrical outlet and turn the system on,including any attached peripherals.14 Press to enter the System Setup program, and check that the processorinformation matches the new system configuration. See "Entering theSystem Setup Program" on page 54.15 Run the system diagnostics to verify that the new processoroperates correctly.See "Running the Embedded System Diagnostics" on page 162 forinformation about running the diagnostics.Power SuppliesYour system supports the following power supply modules:• 350 W (non-redundant power supply)• 400 W (redundant power supply)If two power supplies are installed, the second power supply provideshot-swappable, power redundancy. In redundant mode, the system distributesthe power load across both power supplies to maximize efficiency. When apower supply is removed with the system powered on, the full power load ispicked up by the remaining power supply.Removing a Redundant Power SupplyCAUTION: Many repairs may only be done by a certified service technician. Youshould only perform troubleshooting and simple repairs as authorized in yourproduct documentation, or as directed by the online or telephone service andsupport team. Damage due to servicing that is not authorized by Dell is not coveredby your warranty. Read and follow the safety instructions that came with theproduct.CAUTION: The system requires one power supply for normal operation. Onpower-redundant systems, remove and replace only one power supply at a time ina system that is powered on.1 Disconnect the power cable from the power source.
