DELL NT499 ユーザーズマニュアル

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Adding and Replacing Parts
the appropriate Diskette Drive option (for a floppy drive) or a USB option 
(for a Media Card Reader).
14 Verify that your computer works correctly by running the Dell Diagnostics 
Removing a Floppy Drive or a Media Card Reader (Desktop Computer)
Remove the front panel (see "Removing the Front Panel" on page 154).
4 Disconnect the power and data cables from the back of the floppy drive or 
Media Card Reader.
5 Disconnect the other end of the floppy-drive cable from the system board 
connector labeled "FLOPPY" (for a floppy drive) or "USB1" (for a Media 
Card Reader). To locate system board connectors, see "System Board 
Components" on page 148.