Last reply by 07-11-2021 Unsolved
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XPS 9570 - How to setup monitor using thunderbolt usb-c?

Hi! This post may sound stupid, but I am confused and at my wits end. Thank you to anyone who reads this, in advance.

I have an XPS 9570. I wanted to setup a monitor (WQHD 2560 X 1440) with it using the USB-C thunderbolt port on the laptop. I am hoping to have a setup which requires a single cable going to the power outlet for both my laptop and the monitor and with a single cable connecting the monitor and the laptop. 

I am very confused as to whether this is possible or not, and whether I need a thunderbolt dock/hub between the monitor and the laptop to make it happen. I purchased a Lenovo Q27h-10 monitor (https://www.amazon.in/gp/product/B094YQCB5F/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1), which is supposed to act like a hub? I thought that means that when I connect the laptop to the monitor using USB-C ports on both devices, then the laptop should charge (or provide charge? I am spun around by this point), in addition to transmitting to the monitor. But while it transmits video/audio to the monitor, it does not charge.

I have the option of returning this monitor and buying another one, or of buying a dock/hub to make it work. How should I go about this? 

Note: I thought that there was some problem with the laptop thunderbolt. The thunderbolt controller in Device Manager is hidden / grayed out and when I click on it, it says "Currently, this hardware device is not connected to the computer. (Code 45)". I have spoken to Dell support, reinstalled drivers, changed bios settings, to no avail. Dell Support thinks this is not the problem and that the monitor and the laptop are not compatible and that thunderbolt port will not receive charge. Is it possible that the monitor I have purchased isn't providing enough output to charge the laptop? This is a specsheet of sort on the monitor - https://psref.lenovo.com/syspool/Sys/PDF/datasheet/Lenovo%20Q27h-10_datasheet_EN.PDF

Thank you once again for your time.

Replies (4)
3 Zinc

You might want to read through this extensive Lenovo Forum thread about the Q27h-10 powering laptops.


Although it is referencing powering Mac Books, it may be relevant for your Dell. I am not sure how much power your 9570 requires. The AC adapter is 130w. You might want to consider a Thunderbolt-capable dock. It gives you more options, usually including an ethernet connection.


7 Plutonium

@aniket91jain  The XPS 15 9570 is designed for a 130W power source, which is more than the current 100W max of the USB PD spec.  Dell did something proprietary on some of its docks and systems to support running 130W over USB-C/TB3, but you won't find that implemented on third-party products.  Even Dell's own displays as of this writing don't support that.  If you run your system from an undersized USB-C power source, you are likely to see slower battery charging and throttled performance.  So with your system, if you want to have everything including enough power to run your system optimally on a single cable, you will indeed need a docking station.  Your options would be the WD19S 180W w/ 130 PD, or the WD19TBS (only comes as 180W w/ 130W PD).  You would NOT want the WD19S 130W w/ 90W PD.  If you're only trying to run a single QHD display at 60 Hz, the WD19S would be fine.  The WD19TBS would allow you to run dual displays up to 4K 60 Hz each or triple displays up to QHD each, if you might want some futureproofing.


Thank you for taking time out to reply to my post. would any of the older TB docks from dell work ? like TB16 maybe? I am not concerned with future proofing at the momentas this will remain my setup for a long time. One monitor and the laptop. Than you one again!


@aniket91jain  The TB16 would technically work, but you’d need the version that came with the 240W power supply, not the 180W version, since with that dock model, 240W was necessary to pass 130W to the system. Also be aware that the TB16 got more than its fair share of complaints about reliability and stability, so I really wouldn’t recommend it. The other older dock model you could look at would be the WD15 180W. On the WD15, 180W is enough to get 130W to the system, but there’s also a WD15 130W w/ 90W passthrough. That dock didn’t have nearly as many problems, so as long as your single display doesn’t have a resolution beyond 2560x1440, it would be fine.

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