I have the same laptop with the U4025QW and the SAME power issue. I tried all 3 Thunderbolt ports and using the Thunderbolt cable. Do I need to return my monitor as well?
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Before returning, Dell GHN (Get Help Now) chat technical support must verify the ownership and warranty status. Click the blue "Get Help Now" on the right to start a private live chat session. Share the private Service Tag with them and all of your troubleshooting. This will in turn generate a unique Technical Support case for your unique Service Tag.
These ship with a 130W power adapter - so yes, it's normal that they will charge more slowly (and not run at full speed) with a 90W power input. The system is only being supplied about 70% of the power it needs.
@DELL-ChrisM2 Are you confirming that there is a problem with the Dell Thunderbolt monitors supplying the necessary power for the Dell 16 Premium laptops? This is a bummer. I really like the laptop and the U4025QW monitor. What are my alternatives?
Working as designed. The U4025QW User's Guide confirms that 90 W maximum charging is expected for any systems not listed in the "Dell products compatible with USB Type-C Power Delivery 3.1 (Extended Power Range 140 W) Tech sheet" PDF =
- Dell Precision 5680 Workstation - Dell Precision 5690 Workstation - Dell Pro Max 14 Premium (Renegade 14) - Dell Pro Max 16 Premium (Renegade 16) - Dell Pro Max 16/18 Plus (Kingda Ka 16/18)
DELL-ChrisM2
Community Manager
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January 7th, 2026 14:05
Before returning, Dell GHN (Get Help Now) chat technical support must verify the ownership and warranty status. Click the blue "Get Help Now" on the right to start a private live chat session. Share the private Service Tag with them and all of your troubleshooting. This will in turn generate a unique Technical Support case for your unique Service Tag.
ejn63
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30.8K Posts
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January 7th, 2026 14:08
These ship with a 130W power adapter - so yes, it's normal that they will charge more slowly (and not run at full speed) with a 90W power input. The system is only being supplied about 70% of the power it needs.
Snark
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January 7th, 2026 15:24
@DELL-ChrisM2 Are you confirming that there is a problem with the Dell Thunderbolt monitors supplying the necessary power for the Dell 16 Premium laptops? This is a bummer. I really like the laptop and the U4025QW monitor. What are my alternatives?
DELL-ChrisM2
Community Manager
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1.2K Posts
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January 7th, 2026 15:39
Working as designed. The U4025QW User's Guide confirms that 90 W maximum charging is expected for any systems not listed in the "Dell products compatible with USB Type-C Power Delivery 3.1 (Extended Power Range 140 W) Tech sheet" PDF =
- Dell Precision 5680 Workstation
- Dell Precision 5690 Workstation
- Dell Pro Max 14 Premium (Renegade 14)
- Dell Pro Max 16 Premium (Renegade 16)
- Dell Pro Max 16/18 Plus (Kingda Ka 16/18)