Dell Thunderbolt U4025QW User Manual

Troubleshooting | 103
Problem What you
experience
Possible solutions
No charging
when using
Thunderbolt
TM
4 connection
to computer,
laptop, and so
on
No charging • Verify if the device can support one of the
5 V/9 V/15 V/20 V/28 V charging proles.
• Verify if the Notebook requires a >EPR
140W power adapter.
• If the Notebook requires a >EPR 140W
power adaptor, it may not charge with the
Thunderbolt
TM
4 connection.
• Ensure that you use only the Dell approved
adapter or the adapter that comes with
the product.
• Ensure that the Thunderbolt
TM
4 cable is
not damaged.
Intermittent
charging
when using
Thunderbolt
TM
4 connection to
computer,
laptop, and so
on
Intermittent charging • Check if the maximum power consumption
of the device is over EPR 140 W.
• Ensure that you use only the Dell approved
adapter or the adapter that comes with
the product.
• Ensure that the Thunderbolt
TM
4 cable is
not damaged.
No network
connection
Network dropped or
Intermittent
• Do not toggle O/On the power button
when the network is connected, keeps the
power button On.

Dell Thunderbolt U4025QW Specifications

General

Screen Size	40 inches
Aspect Ratio	21:9
Panel Type	IPS Black
Refresh Rate	60 Hz
Color Support	1.07 billion colors
Curvature	2500R
VESA Mount	100 x 100 mm
KVM Switch	Yes
Resolution	5120 x 2160
Brightness	300 cd/m²
Contrast Ratio	1000:1
Response Time	5 ms
Color Gamut	98% DCI-P3
Ports	RJ45
Speakers	2 x 9W
Built-in Microphone	Yes
Stand Adjustability	Height, Tilt, Swivel
Weight (with stand)	14.4 kg