SD cards with a capacity above 2GB (4GB, 8GB etc...) are not compatible with all appliances. These cards are called SDHC (High Capacity) and they meet specific criteria. Please check whether your appliances are compatible with this type of card. The manufacturers of appliances which use these cards often offer updates. Our Dane-Elec 15-in-1 card reader (link) is compatible with the v2.0 and high capacity cards.