Dell P2815Q Dell User Guide - Page 62

Universal Serial Bus USB Specific Problems, Mobile High-Definition Link MHL Specific Problems

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Universal Serial Bus (USB) Specific Problems Common Symptoms What You Possible Solutions USB interface is not working. Experience USB peripherals are not working. • Check that your monitor is turned ON. • Re-connect the upstream cable to your computer. • Re-connect the USB peripherals (downstream connector) • Switch off and then turn on the monitor again. • Re-boot the computer. • Some USB devices like external portable HDD require higher electric current; connect the device directly to the computer system. Super Speed USB 3.0 interface is slow. Super Speed USB 3.0 • Check that your computer is peripherals working slowly or not working USB 3.0-capable. • Some computers have both USB 3.0 and USB 2.0 ports. at all. Ensure that the correct USB port is used. • Re-connect the upstream cable to your computer. • Re-connect the USB peripherals (downstream connector). • Re-boot the computer Mobile High-Definition Link (MHL) Specific Problems Common Symptoms What You Experience MHL interface is not Cannot see MHL working. device image shown on monitor. Possible Solutions • Re-connect the upstream cable Ensure your MHL cable and MHL device are MHL certified. • Check your MHL device is turned On. • Check your MHL device is not in Standby mode. • Check physical MHL cable connection is corresponding to input source selected on OSD Menu i.e., HDMI (MHL) . • Wait for 30 seconds after connecting MHL cable as some MHL devices require longer recovery time. 62  Troubleshooting

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62
Troubleshooting
Universal Serial Bus (USB) Specific Problems
Common Symptoms
What You
Experience
Possible Solutions
USB interface is not
working.
USB peripherals are
not working.
•
Check that your monitor is
turned ON.
•
Re-connect the upstream cable
to your computer.
•
Re-connect the USB
peripherals (downstream
connector)
•
Switch off and then turn on the
monitor again.
•
Re-boot the computer.
•
Some USB devices like external
portable HDD require higher
electric current; connect the
device directly to the computer
system.
Super Speed USB 3.0
interface is slow.
Super Speed USB 3.0
peripherals working
slowly or not working
at all.
•
Check that your computer is
USB 3.0-capable.
•
Some computers have both
USB 3.0 and USB 2.0 ports.
Ensure that the correct USB
port is used.
•
Re-connect the upstream cable
to your computer.
•
Re-connect the USB
peripherals (downstream
connector).
•
Re-boot the computer
Mobile High-Definition Link (MHL) Specific Problems
Common Symptoms
What You
Experience
Possible Solutions
MHL interface is not
working.
Cannot see MHL
device image shown
on monitor.
•
Re-connect the upstream cable
Ensure your MHL cable and
MHL device are MHL certified.
•
Check your MHL device is
turned On.
•
Check your MHL device is not
in Standby mode.
•
Check physical MHL cable
connection is corresponding to
input source selected on OSD
Menu i.e., HDMI (MHL) .
•
Wait for 30 seconds after
connecting MHL cable as some
MHL devices require longer
recovery time.