Problem

I need help. My brother is asking me to get focusrite saffire pro 40 for him but I don't know where to start. I have searched websites but I can't seem to find the right one. I am comparing different products, but it is pretty hard to come up with a decision when you know nothing about the product you are looking for. It just doesn't make sense to me. Anyway, I have copied links and sent it via email to my brother so he can help me with the process. He can pick the one he needs, send me the link, and I can go ahead and order it. Voila! Problem solved!