70 | Troubleshooting
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 display is turned ON.
• Reconnect the upstream cable to your
computer.
• Reconnect the USB peripherals (downstream
connector).
• Switch o and then turn on the display again.
• Reboot the computer.
• Some USB devices like external portable HDD
require higher electric current; connect the
device directly to the computer system.
SuperSpeed
USB 3.1
interface is
slow.
SuperSpeed
USB 3.1
peripherals
working slowly
or not working
at all
• Check that your computer is USB 3.1-capable.
• Some computers have USB 3.1, 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 USB
peripherals stop
working when a
USB 3.1 device
is plugged in
Wireless USB
peripherals
responding
slowly or only
working as
the distance
between itself
and its receiver
decreases
• Increase the distance between the USB 3.1
peripherals and the wireless USB receiver.
• Position your wireless USB receiver as close as
possible to the wireless USB peripherals.
• Use a USB-extender cable to position the
wireless USB receiver as far away as possible
from the USB 3.1 port.
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