Blade 15 Ad, 2022 ssd upgrade.

So I’m looking to upgrade my ssd and memory specs say supports a 2tbSSD in second slot. And  Was wondering if anyone has upgraded both slots to 2tb each?, or is it 1tb per slot And max  of 2tb? Has anyone done this? I watched the support vid but it only does a single slot replacement upgrade. So just curious. Also wonder what brands have you all used for it? And what brands have you used or suggest for both memory and ssd