A:Answer 2 NVMe slots. The one on the left has your Windows installed, the one on the right is empty and open. Both RAM slots are replaceable and are XMP compatable, so neither are soldered to the board (sweet)! You can put a total of 64GB of RAM. As for just putting your Windows NVMe drive in, I believe you can yes, but if you had it on another machine you might have driver issues and such. You cannot replace the GPU or the Wireless Card as both are soldered to the Motherboard. If you get the AMD cpu version, you can replace the wireless card. Its WiFI 6 though, I mean if you really need 6e, then you won't be able to replace it in this exact laptop.