My impression while doing that was that Dell was designing for incompatibility to avoid their business-class stuff from watering down demand for their Alienware

My impression while doing that was that Dell was designing for incompatibility to avoid their business-class stuff from watering down demand for their Alienware line. I couldn't get a PSU's that had enough power for a decent GPU while also fitting in the wonky proprietary slot. Nothing a Dremel tool couldn't solve, but almost annoying enough to let the bastards win and buy separate stuff.