With current size SD cards it is possible to add quite some space to mbp without removing any screws. But that brings me following questions: 1 is there any NOT protruding expresscard SD card reader and will it keep SD card hidden while it is inserted? 2 speed? How fast it is? Yes, I know about lexar expresscard hard drives. There are a lot of negative reviews online. They are slow, expensive and can be used only inside expresscard slot. SD cards on the other hand can be used in many other devices.