This message was posted on behalf of Intel Corporation
Thanks for the interest in our Intel® Dual Band Wireless-AC 8265 adapter.
Based on the limited information we were able to find, it looks like it is possible to install the adapter on the system. Please keep in mind, we do not support wireless adapter upgrades.
-Why Doesn't My Laptop Recognize My New Intel® Wireless Adapter?
-Regulatory Information Regarding Hardware Installation or Upgrade
We recommend you to contact Dell* so they can confirm the compatibility of your system with the adapter. Also, We strongly advise you to purchase parts directly from the manufacturer.
Did you upgrade the wireless card to the 8265?
I have the same Dell XPS and my wireless card is going bad and I figure if I'm opening the laptop to fix it might as well upgrade!