Dell U4021QW User Manual page 79

Specific What You
Symptoms Experience
USB Type-C USB peripherals
port does not can not be
supply power charged
Super Speed Super Speed
USB 3.2 Gen2 USB 3.2 Gen2
interface is peripherals
slow. working slowly
or not working
at all
Wireless USB Wireless USB
peripherals stop peripherals
working when a responding
USB 3.0 device slowly or only
is plugged in working as
the distance
between itself
and its receiver
decreases
USB is not No USB
working functionalities
Possible Solutions
• Check that the connected device is compliant
with the USB-C specification. The USB Type-C
port supports USB 2.0 and an output of 90 W.
• Check that you use the USB Type-C cable
shipped with your monitor.
• 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.
• 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 USB peripherals.
• Use a USB-extender cable to position the
wireless USB receiver as far away as possible
from the USB 3.0 port.
Refer to input source and USB pairing table.
Troubleshooting | 79