Installing The Optional Speaker - Dell Precision NT499 User Manual

9 Enter System Setup (see "Entering System Setup" on page 81) and enable
the drive.
10 Verify that your computer works correctly by running the Dell Diagnostics
(see "Dell Diagnostics" on page 107).

Installing the Optional Speaker

CAUTION:
safety instructions in the Product Information Guide.
CAUTION:
the electrical outlet before opening the cover.
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.
1 Follow the procedures in "Before You Begin" on page 143.
2 Remove the computer cover (see "Removing the Computer Cover" on
page 145).
240
Adding and Replacing Parts
Before you begin any of the procedures in this section, follow the
To guard against electrical shock, always unplug your computer from