How do I increase storage on my Inspiron 3671? It currently has 250 GB and it's full. Got as far as getting a Crucial M.2 SSD 1TB and (I think) cloned the disk onto an external hard drive; however don't know where to go from there,  I have only one SSD slot. I can follow instructions, but Crucial is bewildering. Don't mind returning the Crucial - does Dell provide something a little more straightforward to install? Nothing fancy; I need more space for my files. Any tips would be greatly appreciated.