[NAME] The drive you selected appears to meet the storage specifications for M.2 drives listed in the XPS 8950 Setup and Specifications on page 17 so it should be compatible.
I am looking for an SSD to purchase for my 8950 XPS. The one I am about to purchase is a WD_BLACK 2TB NVMe Gen4 PCIe, M.2 2280. Would that be compatible with my desktop?  Amazon Link:  [URL]   [IMAGE]  
XPS 8950, WD_Black SN850X compatible SSD?