Please keep this thread focused on ordering, shipping, and receiving your 27 inch iMacs late 2015. It's not about connections for peripherals that don't exist or some world where you can get a desktop equivalent GPU in an all in one. No, this is for ordering, shipping and receiving. Plenty of other threads about those issues. (Although I find the RAM discussion intriguing, someone pointed out you can't even get 16gb sims. So that's moot too. If it takes ddr-4, intriguing, but inconsequential.
So again, list what you ordered!
So again, list what you ordered!