Dell U2415 Monitor - Manual (Page 62)

62 | Troubleshooting
Universal Serial Bus (USB) Specific Problems
Mobile High-Definition Link (MHL) 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.
Wireless mouse
is not working
or lagging Do not respond
or responds
slowly • Increase the distance between the USB 3.0 peripherals and
the wireless USB receiver.
• Position your wireless USB receiver as close as possible to
the wireless mouse.
• Use a USB-extender cable to position the wireless USB
receiver as far away as possible from the USB 3.0 port.
Specific
Symptoms
What You
Experience
Possible Solutions
MHL interface
is not working Can not 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.