Thanks All! I played with the card that would not read and finally gave up, and all of my other cards including all old GPS units were SDHC cards and they gave me problems. I did manage to find a couple of inexpensive SD only cards on eBay and the first arrived today. I did have to go into set up (c...

My SD card died - cannot read it. I have a new card that is larger and not a Resmed SD card and the machine will not recognize it. The new card is 8G using and adapter, and I suspect the original is a 1G unit. Any ideas?