Like Donnie said just let Windows format it.
If you want to be nerdy about it, and who doesn't, 512B (upper-case B because lower-case would be bits not bytes) is a legacy cluster size while 4kB (again bytes not bits

) is a more modern cluster size. I say modern but drives started transitioning to what's called
Advanced Format just over a decade ago.
I hope I've got my upper and lower case B's, my bits and bytes, correct because if not I've just made myself look stupid.