Chosen Solution

I got my cable in for my 2011 MBP and this is how it shipped to me (I did opt for no bracket since I confirmed my IR sensor works. That part is correct). Is it safe to use in this condition or should I return it as defective while I’m ahead? The computer is laggy (but not unbearably), so I think I need to replace it sooner then I thought I had to.

Yes. That’s the 2012 cable and is the one most techs recommend for the 2011 now. With this one SSD drives run much better. The cable does get damaged as it comes up and onto the optical drive so I use protective padding to prevent that.