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56 Operating the Monitor Appendix 57
The picture The picture • Due to dierent video formats (aspect
does not fill cannot fill ratio) of DVDs, the monitor may display
the entire the height or in full screen.
screen. width of the
screen
• Run the built-in diagnostics.
Appendix
WARNING: Safety Instructions
WARNING: Use of controls, adjustments, or procedures other than
NOTE: When choosing DVI-D mode, the Auto Adjust function will not
be available.
Universal Serial Bus (USB) Specific Problems
Specific
Symptoms
What You
Experience
Possible Solutions
USB USB • Check that your monitor is turned ON.
interface is peripherals
not working are not
working
•
Reconnect the upstream cable to
your computer.
• Reconnect the USB peripherals
(downstream connector).
• Switch o and then turn on the
monitor again.
• Reboot the computer.
• Some USB devices like external
portable HDD require higher electric
current; connect the device directly
to thecomputer system.
High Speed High Speed • Check that your computer is USB
USB 2.0 USB 2.0
2.0-capable.
interface is
slow.
peripherals
working
slowly or not
working at all
• Some computers have both USB 2.0
and USB 1.1 ports. Ensure that the
correct USB port is used.
• Reconnect the upstream cable to your
computer.
• Reconnect the USB peripherals
(downstream connector).
• Reboot the computer.
those specified in this documentation may result in exposure to shock,
electrical hazards, and/or mechanical hazards.
For information on safety instructions, see the Product Information Guide.
FCC Notices (U.S. Only) and Other Regulatory Information
For FCC notices and other regulatory information, see the regulatory
compliance website located at: http://www.dell.com/regulatory_compliance.
Contacting Dell
For customers in the United States, call 800-WWW-DELL (800-999-3355).
NOTE: If you do not have an active Internet connection, you can find
contact information on your purchase invoice, packing slip, bill, or Dell
product catalog.
Dell provides several online and telephone-based support and service
options. Availability varies by country and product, and some services may
not be available in your area.
To get online monitor support content:
1. Visit www.dell.com/support/monitors.
To contact Dell for sales, technical support, or customer service issues:
1. Visit www.dell.com/support.
2. Verify your country or region in the Choose A Country/Region drop-
down menu at the bottom of the page.
3. Click Contact Us on the left side of the page.
4. Select the appropriate service or support link based on your need.
5. Choose the method of contacting Dell that is convenient for you.