With the RAM they give a choice of 2x16 or 1x32. Not worried about RAM. I have RAM lying around.Here's the owners manual for that model. From a quick glance through it, there are 4 DIMM slots for memory so it will probably come with 4 sticks of 8gb RAM. It also has space in the case for 2 additional 3.5 inch drives as well as extra SATA ports to plug them into the motherboard. The bootable drive is a M2 format SSD so this PC can have 3 drives (1 M2 SSD and 2 conventional drives) plus 1 optical drive.
https://dl.dell.com/content/manual3...r-plus-7020-owner-s-manual.pdf?language=en-us
Good job and thanks! I guess that's the one then. Don't worry, I will double-check.