> That was possible on nearly all laptops some years back. Not necessarily in this size class/with this chassis design. "Ultrabooks" as a class haven't been ne

> That was possible on nearly all laptops some years back. Not necessarily in this size class/with this chassis design. "Ultrabooks" as a class haven't been nearly as user-serviceable as you're suggesting. > made by a single company, few variants; Bays might be the most proprietary Eh. I'm not terribly worried about this given that they're TB3 or TB4 (to wit: PCIe) and provided with reference designs[1]. I have to admit, though, that I couldn't easily find IBM's old expansion bay spec or proprietary connector... or for that matter, HP's, or Dell's, or... well, yes. Bays sure are proprietary. To extoll the virtues of somebody else's bays and in the same breath deny these is at best misplaced nostalgia. :) [1]: https://github.com/FrameworkComputer/ExpansionCards https://github.com/FrameworkComputer/ExpansionCards