Having a problem with the Micro SD internal slot, next to the sim card. Installed a 250gb Micro SDXC card and was working fine. Loading programs on it and moving librayes to it when in the process of moving music and loading itunes to it everything hung up. Rebooted and the 250gb Micro SDXC has not worked since, but I can put a 32gb SDHC and it works fine. The same 250gb SDXC in a SD adapter in the SD slot and that will see the 250gb, just won't work on the internal slot any longer. Driving me nuts thought I had a way around the 48gb drive. Have reloaded tablet from scratch today with no change.