Thanks again, @Bob.B !As usaf wrote.
Keep in mind that if the gum stick croaks your dead unless you have a spare gum stick sitting on the shelf.
Perhaps clone to a gum stick instead of a hdd now your covered in two directions.
I now understand that a tiny M.2 2280 or an M.2 2230 SSD is the order of the day, but I was wondering about adapters or docks for these tiny SSDs. As I don't wish to open up our brand new Dell 7630 laptop, I'd like to find a reasonably priced "external" adapter/drive to work with. Considering that both our Macs and the new Dell 7630 have Thunderbolt ports, perhaps that would be the way to go? Anyway, if you have any experience with this kind of thing, I'd appreciate your thoughts. Thank you kindly.
By the way, I watched a YT disassembly video covering the Dell 7630. It seems to come with an M.2 "Chiclet" 2230 SSD, but it also has and additional slot for (1) M.2 Gumstick 2280 SSD. Hopefully, this information will help inform other Dell 7630 owners out there.