Hello. First of all, sorry for my bad English. I want to buy a notebook (my first one). A macbook pro. I know that 17" model has the expresscard slot, and 15" has SD card instead. I'd like to know: Can the 15" model be equipped with expresscard slot? (that is, substitute SD by expresscard). If not, does any adaptor/converter exist on the market? Apart, which one is better (is more usable/useful), SD slot or expresscard slot? A 17" is a bit big for me, but if it has a slot more useful, and it's impossible to fit on the 15" model, I'll buy it (probably refurbished: outdated in few weeks, but cheaper). Thanks in advance. Sergio.