Dell OptiPlex 755 User's Guide - Page 249

CAUTION: To guard against electrical shock, always unplug your computer from the power supply before removing the hard drive. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis. NOTICE: To avoid damage to the drive, do not set it on a hard surface. Instead, set the drive on a surface, such as a foam pad, that will sufficiently cushion it. Installing a Hard Drive 1 If you are installing a new drive, rather than replacing an already installed drive, attach the plastic drive rails-located inside the cover-to the new drive and skip to step 9. 1 2 3 1 drive 2 drive rails (2) 3 screws (4) 2 If you are replacing a hard drive that contains data you want to keep, back up your files before you begin this procedure. 3 Check the documentation for the drive to verify that the drive is configured for your computer. 4 Follow the procedures in "Before You Begin" on page 21. 5 Remove the computer cover (see "Removing the Computer Cover" on page 168). 6 Remove the installed hard drive: a With one hand, squeeze the drive rails so as to push the two rails toward each other. b Slide the drive slightly forward, and rotate the hard drive up and away from the hard drive bracket. Drives 249