On 27 Aug 2020 at 06:20:19 BST, "micky" wrote:

I was busy for a while so I'm back to shopping.

Microcenter only has branches in 20 cities or so, but their webpage is
very good in terms of the detail it gives.

For example, they usually? tell you how much RAM it comes with, how many
slots for RAM there are, how many are used, and what's the maximum
amount of RAM you can put in.

And it lets you filter on whether it has an optical drive or not.

1) Optical drives it splits into 3 kinds, DVD-ROM, DVD-RW, and DVD+/-RW.
Isn't any of these good enough for me? I don't copy movies. And I
just bought some blank, DVD+R's but I think I can still exchange them.

Writeable DVD standards are/were a mess:
https://en.wikipedia.org/wiki/DVD_recordable

Nowadays I think all drives can read/write to any media.