Help installing SSD

Hi guys, I bought my laptop about 2 years ago and I think it is time I add a solid state drive into one of the spare hard drive compartment. I really need my software to load faster. I was wondering how am I suppose to do it? I have a MSI GT70 2PC Dominator.

Here's what it looks like, the standard 1 terabyte hard drive is on the top left, I am not planning to replace it. However there is another empty slot on the bottom right... This looks like it can only fit a regular hard drive. If so, what can I do? If not, then which SSD would fit in the slot?

https://c2.staticflickr.com/8/7099/2...95741948_c.jpg

My laptop also came with this piece, looks like it belongs in the hard drive bay somehow.

https://c2.staticflickr.com/8/7646/2...5ca48088_z.jpg

A regular 2.5" SSD would fit in the bottom left. Obviously not an M.2 or PCIE SSD.
It's not rocket science to put it in really. That piece is used to secure the SSD/HDD in place. Again, it's not rocket science so you should be able to figure this out on your own.

FYI, a regular HDD is 3.5" and you can't fit those in there.