Previously I had tried a few different settings on the switches which mostly resulted in the portable either ignoring the card, or coming up with a sad mac error. I've played with it a little more now and do seem to be making some progress, so it appears to be properly for the backlit model. I've now got it recognizing 4MB of the card so far, so I'm quite happy. I'm going to mess around with it a little more and see if it's truly an 8MB card or not.