With Dell you have to buy the business version of a notebook to get Windows Pro. Your example would be [1][2]. Apart from price the main differences are that the business versions ship with Windows Pro and that they have better warranty (next-day onsite).
1: https://www.dell.com/en-uk/work/shop/tablets-and-2-in-1-lapt...
2: https://www.dell.com/en-uk/work/shop/laptops/new-xps-15-2-in...
Re:Windows Sandbox
by WorldMaker on Wednesday December 19, 2018 @04:23PM
(#18719790)
The Windows Store in Windows 10 has a "one-click" $99 upgrade from Home to Pro, Dell doesn't really need to offer it as a configuration item anymore.
Windows SKU has nothing to do with hardware.
https://www.dell.com/en-uk/shop/2-in-1-laptops/new-xps-15-2-...
Actually I can't seem to configure that directly from dell to come with Pro lol. Seems there's a question about that too.