112 Installing System ComponentsInstalling the SAS BackplaneCAUTION: Many repairs may only be done by a certified service technician.You should only perform troubleshooting and simple repairs as authorized inyour product documentation, or as directed by the online or telephone service andsupport team. Damage due to servicing that is not authorized by Dell is notcovered by your warranty. Read and follow the safety instructions that camewith the product.1 Lower the backplane into the system, being careful to avoid damagingcomponents on the face of the board.2 Align the slots in the backplane with the retention hooks on the back ofthe drive bays, then move the backplane forward until the retention hooksfit through the slots in the backplane. See Figure 3-24.3 Slide the backplane downward until the two blue retention latches snapinto place.4 Connect the SAS data and power cables to the SAS backplane.5 Install the hard drives in their original locations.6 Connect the USB cable and the control panel cable to the system board.CAUTION: Handle the cables gently to prevent damage.7 Connect the internal hard-drive cables.8 Close the system. See "Closing the System" on page 61.9 Reconnect the system to its electrical outlet and turn the system on,including any attached peripherals.