Need some help, I think my hard drive in my 2011 Macbook Pro may be dying, so I am trying to figure out what I should buy I am looking in to the OCZ Agility 4 - 512GB Internal Solid State Drive but I need help due to the fact I am in the middle of the ocean (in the navy and deployed) and its hard to do research and I just don't know that much about the subject, so if anyone can help that would be great thank you