Correct M2 SSD for Alienware 17 R4

Hi,

I have an R4 arriving next week, and I want to get a second SSD here before it arrives.  I just can't find out which kind of ssd it needs.  There's a crucial m2 type 2280 on amazon at a nice price point with a B & M connector, but I just don't know if that is compatible.  It's the CT1050MX300SSD4 (wasn't sure if amazon links were allowed) if you want to search for it.

Can anyone confirm that this drive will work?

Thanks!