I currently have a Z270 Tomahawk Arctic motherboard. Initially I bought an SSD (125GB NVMe) that I assume is in my M.1 slot right now. I recently purchased a 2280 intel NVMe (1TB) which I figured out would indeed be compatible with either one of my M slots in my motherboard (M.1 & M.2 support 2280). I have downloaded the Z270 Tomahawk Arctic motherboard manual found here. I am a bit lost because I do not quite understand the verbiage in the manual and basically what I am trying to figure out is if my motherboard will split the speed between my 2 pcie lanes or if i will get the same speed on both that I currently do on the one I have. I may have missaid something here, this is just my current understanding as I am ignorant on this subject.
EDIT: I guess I am looking for "the answer" but I also want to know how I can tell myself in the future?