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Troubleshooting | 61
Universal Serial Bus (USB) Specific Problems
Specific
Symptoms
What You
Experience
Possible Solutions
USB interface is
not working
USB peripherals
are not working
Check that your monitor is turned On.
Reconnect the upstream cable to your computer.
Reconnect the USB peripherals (downstream
connector).
Switch Off 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 the computer system.
High Speed USB
3.0 interface is
slow
High Speed USB
3.0 peripherals
working slowly or
not working at all
Check that your computer is USB 3.0-capable.
Some computers have USB 3.0, 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.
Mobile High-Definition Link (MHL) Specific Problems
Specific
Symptoms
What You
Experience
Possible Solutions
MHL interface is
not working
Cannot see MHL
device image
shown on monitor
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) 1 or HDMI (MHL) 2.
Wait for 30 seconds after connecting MHL cable as
some MHL devices require longer recovery time.
61


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