l Improved cable routing facilitates more efficient airflow inside the chassis.l Compact cable connectors save space on the system board and on the hard drive, allowing for more efficient utilization of space inside the chassis.General Drive Installation GuidelinesSATA hard drives should be connected to connectors labeled "HDD" on the system board. Non-hard drive SATA devices should be attached to the connectorslabeled SATA, with the exception of a 5th SATA hard drive installed in a 5.25-inch drive bay, which much be connected to the SATA0 connector. IDE CD/DVDdrives should be connected to the connectors labeled "IDE."When connecting a SATA cable, hold the cable by the connector at each end and press firmly into the connector. When disconnecting a SATA cable, hold thecable by the connector at each end and pull until the connector detaches.When you connect two IDE devices to a single IDE data cable and configure the devices for the cable select setting, the device attached to the last connectoron the data cable is primary or the boot device, and the device attached to the middle connector on the data cable is the secondary device. See the drivedocumentation in your upgrade kit for information on configuring devices for the cable select setting.To connect an IDE data cable, align the tab on one connector with the notch on the other. When disconnecting an IDE data cable, grasp the colored pull-taband pull until the connector detaches.Hard DriveRemoving a Hard Drive1. Follow the procedures in Before You Begin.2. Remove the computer cover (see Removing the Computer Cover).3. Disconnect the power cable and the data cable from the hard drive.1 SATA data cable 2 SATA data connector (on the system board) 3 SATA driveCAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.NOTICE: If you are replacing a hard drive that contains data that you want to keep, back up your files before you begin this procedure.