Hi, I've had my XPS 8930 for a while now and am running into space issues. I'd like to add an additional SSD. It came with an SSD and a HDD, both of which I'd like to keep if possible. Is it possible to attach an additional SSD? If so, how and do you have any recommendations (1TB would be fine)?

In the picture below, I believe there are 2 SATA connectors open that I could connect additional SSDs to, but I don't see how I could mount it.

In terms of SSD options, I'm looking at https://diskprices.com/?locale=us&condition=new,used&units=gb&capacity=500-&=m2_ssd 

Am I correct in filtering it based on M.2 SATA?