Dell Dimension 4500S - Manual (Page 7)

S a f e t y I n s t r u c t i o n s 7
Use the following safety guidelines to help protect your computer from
potential damage and to ensure your own personal safety.
When Using Your Computer
As you use your computer, observe the following safe-handling guidelines.
CAUTION: Do not operate your computer with any cover(s)
(including the computer cover, filler brackets, front-panel inserts,
and so on) removed or opened.
• Your computer is equipped with one of the following:
– A fixed-voltage power supply — Computers with a fixed-voltage
power supply do not have a voltage selection switch on the back
panel and operate at only one voltage (see the regulatory label on
the outside of the computer for its operating voltage).
– An auto-sensing voltage circuit — Computers with an auto-
sensing voltage circuit do not have a voltage selection switch on
the back panel and automatically detect the correct operating
voltage.
– A manual voltage selection switch — Computers with a voltage
selection switch on the back panel must be manually set to
operate at the correct operating voltage.
• To help avoid damaging a computer with a manual voltage selection
switch, be sure that the voltage selection switch is set to match the AC
power available at your location:
– 115 V/60 Hz in most of North and South America and some Far
Eastern countries such as South Korea and Taiwan
– 100 V/50 Hz in eastern Japan and 100 V/60 Hz in western Japan
NOTE: The voltage selection switch must be set to the 115V position
even though the AC supply in Japan is 100 V.