Having purchased a MBP, which does not have an SD Card Reader, I asked on these forums for some help regarding an ExpressCard/34, which plugs into the slot on my MBP, however, inserting it, and clicking it into place, nothing happens, or when I insert my SD card into it, is there something else I have to do in orfder for it to work, or have I been sold a dud ExpressCard/34?

Thanks in advance.