Chosen Solution

Does all the logic board of the MacBook Pro 17-Inch have the same form factor? Does it have the same ports and cables? Is it interchangeable from 2009 to 2011 if I need to replace it? (Early 09, Mid 09, Mid 10, Early 11, Late 11) Thanks!

That’s a pretty involved question that would make doing about 45 minutes of research, I’d start doing it if you want the answers. Go to each of the machines you are interested in and look at the compatibility of each board. Meanwhile I’ll go answer another half a dozen question in the time.