Dell U4025QW User Manual

6. Trouble Shooting Instructions
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 U4025QW Specifications

General

Screen Size	40 inches
Resolution	5120 x 2160
Aspect Ratio	21:9
Panel Type	IPS Black
Refresh Rate	60 Hz
Brightness	300 cd/m²
Color Support	1.07 billion colors
Color Gamut	100% sRGB, 98% DCI-P3
USB Hub	Yes
Built-in Speakers	Yes
VESA Mount Compatible	Yes (100 x 100 mm)
Curvature	2500R
Contrast Ratio	2000:1
Response Time	5ms (GtG)
Ports	HDMI, DisplayPort, USB-C
Connectivity	Thunderbolt 4, DisplayPort 1.4, HDMI 2.1, USB-C, USB-A