Adding and Replacing Parts 2578 If you are installing another drive in the FlexBay, see the appropriateinstallation instructions in this section.9 Reinstall the drive panel (see "Replacing the Drive Panel" on page 237).10 Ensure that all connectors are properly cabled and firmly seated.11 Replace the computer cover (see "Replacing the Computer Cover" onpage 161).NOTICE: To connect a network cable, first plug the cable into the network port ordevice and then plug it into the computer.12 Connect the computer and devices to electrical outlets, and turn them on.Installing a Media Card Reader (Tower Computer)NOTICE: In a tower configuration with 3 hard drives, a Media Card Reader is notsupported, since the third hard drive must be installed in the FlexBay.1 Follow the procedures in "Before You Begin" on page 151.2 Remove the computer cover (see "Removing the Computer Cover" onpage 153).3 Remove the drive panel (see "Removing the Drive Panel" on page 233).4 If another device is installed in the FlexBay, remove that device (see theappropriate removal instructions in this section).NOTICE: If metal shields are present in your computer configuration, they must beinstalled at all times while your computer is in use or your computer may notfunction properly.5 If metal shields are present in your computer (see "About the MetalShields Present in Some Drive Configurations" on page 207) and theFlexBay is not populated, slide the sliding-plate lever to the right and holdit in place as you pull to remove the vented metal insert from the FlexBay.6 Remove the FlexBay drive-panel insert (see "Removing a Drive-PanelInsert" on page 235).7 If no screws are attached to the Media Card Reader check the inside of thedrive-panel insert for screws and attach them to the new Media CardReader.