DELL C2722DE - Инструкция по эксплуатации - Страница 120

120

        |       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).

• Turn off the monitor and turn it on again.
• Reboot the computer.
• Certain USB devices such as portable hard 

drives require higher power source; connect 
the drive to the computer directly.

super speed 
USB 3.2 Gen 
1 interface is 
slow.

super speed 
USB 3.2 Gen 
1 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 USB 
peripherals stop 
working when a 
USB 3.0 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 3.0 

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.

USB is not 
working

No USB 
functionalities

Refer to 

input source

 and USB pairing table.