Installing System Components 143Installing the Control Panel BoardCAUTION: 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.1 Align the screw holes on the control panel board with the holes on thefront-chassis assembly.2 Using a T10 Torx driver, replace the three screws that secure the controlpanel board to the front-chassis assembly. See Figure 3-29.3 Using a T8 Torx driver, replace the screw that secures the control panelboard on the front of the system. See Figure 3-29.4 If applicable, replace the USB memory key. See "Internal USB MemoryKey" on page 104.5 Connect all the cables to the control panel board.NOTE: Ensure that you release the cable clamp before connecting the cableand then latch the clamp after connecting the cable.6 If required, route the power/data cables along the chassis wall. See "Front-Chassis Assembly" on page 90.7 Close the system. See "Closing the System" on page 77.8 If applicable, replace the front bezel. See "Installing the Front Bezel" onpage 75.9 Reconnect the system to its electrical outlet and turn the system on,including any attached peripherals.System Board AssemblyThe system board assembly is divided into two boards, which areinterconnected by a high-speed connector.• Processor board—It has the connectors for the memory modules, powersupplies, and processors.• I/O board—It has the connectors for expansion-card risers and expansioncards.
