I have a 4 year old Toshiba Satellite Laptop Model L355-S7902 that is described as having a ExpressCard/34 and 54 slot. I found the slot with a fold down door and eject button. I purchased a Transcend USB ExpressCard Adapter and it feels like it plugs in but since the door is so much wider than the adapter it feel very loose and does not work. Am I missing something to adapt the width of the slot to the width of my card? Do I have the right card? The computer has three USB slots and I was hoping to add USB ports and perhaps even USB 3.0 if possible. Any suggestions are appreciated. Thanks!