Dell UltraSharp UP3221Q User Manual page 95

No video when No picture is
using USB-C showing
DP Alt-Mode
connection
after DC On/
Off, wake up
from Sleep
SuperSpeed SuperSpeed
USB 5/10 USB 5/10
Gbps (USB 3.2 Gbps (USB
Gen 1/2) 3.2 Gen 1/2)
interface is peripherals
slow working
slowly or not
working at all
Wireless Do not
mouse is not respond or
working or responds
lagging slowly
• Unplug/plug USB-C cable.
• The monitor ships with a Thunderbolt™ 3
Active cable. This cable does not work with a
USB-C DP Alt-Mode source. If you are using a
computer with USB-C DP Alt-Mode
connection, please purchase a USB-C DP
cable separately.
• Check that your computer is SuperSpeed
USB 5/10 Gbps (USB 3.2 Gen 1/2)-capable.
• Some computers have 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
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 SuperSpeed USB 5/10 Gbps (USB
3.2 Gen 1/2) port.
Troubleshooting
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