My SD memory card is not detected by the tablet
Make sure the memory card is not damaged and is detected by another device (e.g. a computer or a digital camera).
SD memory cards (up to 2 GB) and SDHC memory cards (up to 32 GB have been tested and found compatible with your tablet device. However, this does not guarantee that all SD memory cards or SDHC memory cards will be compatible with your tablet device. Make sure that your memory cards are purchased from a trusted vendor.