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Rotate the drive down. Then replace the screw that holds the diskette drive to the bracket. To replace the 3.5-inch diskette drive assembly in the chassis, slide the retaining tabs into the guides on the chassis until the bracket snaps into place. Figure 9. 3.5-Inch Diskette Drive Removal Figure 10. 3.5-Inch Diskette Drive Bracket 1 3.5-inch diskette drive 2 5.25-inch drive bays (3) 3 Hard-disk drive CAUTION: Before you remove the computer cover, see "Precautionary Measures." 1 Retaining-tab release button 5.25-Inch Drive Removal To remove a device from an externally accessible drive bay, perform the following steps. 1. Remove the computer cover. 2. Remove the front panel. 3. Disconnect the DC power and data cables from the back of the drive. 4. Squeeze the retaining tabs that extend from each side of the drive bracket and slide the bracket out of the bay (see Figure 11). 5. Turn the drive assembly upside down and unscrew the four screws that secure the drive to the bracket (see Figure 12). To install a 5.25-inch drive, perform the 5.25-inch drive removal procedure in reverse. Figure 11. 5.25-Inch Drive Removal Figure 12. Drive Bracket 1 3.5-inch diskette drive 2 Retaining tabs (2) 3 Bracket 4 Screw CAUTION: Before you remove the computer cover, see "Precautionary Measures." 1 Retaining tabs (2) Hard-Disk Drive Removal To remove a hard-disk drive, perform the following steps. 1. Remove the computer cover. 2. Remove the front panel. 3. Disconnect the DC power and data cables from the rear of the drive. 4. Lift the drive door handle and open the drive door until it disengages from the hard-disk drive bracket (see Figure 13). 5. Use two hands to pull the hard-disk drive bracket completely out of the chassis. Figure 13. Hard-Disk Drive Bracket Removal Hard-Disk Drive Installation To install a hard-disk drive, perform the following steps: 1. Slide the drive into the chosen bay of the hard-disk drive bracket, oriented so that the connectors on the back of the drive will face the back of the chassis when the hard-disk drive bracket is reinstalled (see Figure 14). 2. Align the four screw holes of the drive and hard-disk drive bracket. Insert and tighten the screws (see Figure 14). Figure 14. Inserting a Hard-Disk Drive in the Hard-Disk Drive Bracket 1 Retaining tabs (2) 2 Drive bracket 3 Screws (4) CAUTION: Before you remove the computer cover, see "Precautionary Measures." 1 Hard-disk drive bracket 2 Drive door handle 3 Drive door 3. Reinstall the hard-disk drive bracket in the chassis (see Figure 15). Insert the hard-disk drive bracket into the drive bay cage by gently sliding it in until the tabs snap into place. Close the drive door until it snaps securely into place. Be sure to fold down the drive door handle so that the front panel can be replaced on the chassis. Figure 15. Hard-Disk Drive Bracket Insertion 4. Connect a DC power cable to the power input connector on the back of the drive (see Figure 16). Check all connectors to be certain that they are properly cabled and firmly seated. 5. Connect one of the device connectors on the enhanced integrated drive electronics (EIDE) cable to the 40-pin interface connector on the back of the hard-disk drive. NOTICE: You must match the colored strip on the EIDE cable with pin 1 on the drive's interface connector to avoid possible damage to your system. Figure 16. Hard-Disk Drive Cable Attachment 1 Hard-disk drive bracket 2 Second drive bay 3 Drive 4 Screws (4) 1 Drive bay cage 2 Hard-disk drive bracket 3 Tabs NOTE: Ultra ATA/66 hard-disk drives require an 80-conductor cable to transfer data at full speed. The 80-conductor cable has a 40-pin connector just like the Ultra ATA/33 cable but has twice as many wires within the cable itself. If you use an Ultra ATA/33 cable with Ultra ATA/66 hard-disk drives, the drives will transfer data at Ultra ATA/33 speeds. 6. If it is not already connected, connect the other end of the EIDE cable to the IDE1 connector on the system board. NOTICE: You must match the colored strip on the EIDE cable with pin 1 on the IDE1 connector to avoid possible damage to your system. 7. Replace the computer cover and restart the system. 8. If the drive you just installed is the primary drive, insert a bootable diskette into drive A. 9. Enter System Setup, and update Primary Drive 0 or Primary Drive 1. After you update the System Setup settings, reboot the system. 10. Partition and logically format your drive before proceeding to the next step. See the documentation for your operating system for instructions. 11. Test the hard-disk drive by running the Dell Diagnostics (see the online System User's Guide for more information). 12. If the drive you just installed is the primary drive, install your operating system on the hard-disk drive. Refer to the documentation that came with your operating system. AGP Card Brace To access any expansion cards or components on the system board in the mini tower chassis, you must first remove the accelerated graphics...