I received the LR viewer as a gift recently. It will indeed handle any Memory card you'd probably want to use. It's actually name is "Leaf River MULTI-card viewer". It reads CF I, CF II, SD, Memory Stik, pretty much anything you can feed it. It's a great toy and has a surprisingly good image on it's large 2.4" screen. You can adjust the color and contrast of the screen for better viewing and it also allows you the option to zoom and pan & scan to really check out your images. It also seems to be pretty decent on it's 2 AA batteries.