Q: Why does my 2GB/4GB Transcend SD Memory card only show a memory capacity of 1GB, or less after using it with my device? A: The reason for this is that some devices can`t support higher capacity SD Memory cards, so the computer, or device will change the card¡¦s original settings and display a smaller capacity. You can download Transcend`s recovery program from our website to return your SD memory card to its default settings (Note: The program is for Transcend 2G/4G SD card only ). Download recovery program 163KB Q: Why do some card readers not recognize my 2GB, or 4GB Transcend SD Memory cards? A: Most card readers only support a maximum memory capacity of 1GB on an SD card. Therefore, using an SD card that is over 1GB will cause problems and mean that the card cannot be read. In this instance please contact the manufacturer of your card reader to ensure it supports higher capacity SD flash memory cards. ps: Transcend's new release Card reader TS-RD13S/R/B fully supports SD150 2GB/4GB.