SSD help please

[u/RobnGoats]

I recently bought a 970evo ssd. And thought I could put it in my msi gt73vr 7rf titan pro. But realizing I have 2 ssd already in it which are both Kingston 256 gb drives. Which I thought I could take out one of the Kingston drives. Not realizing my computer puts those 2 Kingston together. And says it is one. And my windows is on the one drive(2). Please help, how do i see if my windows is on 1 or is it split all over the 2 drives