I do have own one 2Gb Sansa Express. I do have a problem that when ever I insert it to my laptop / pc, internal memory is shown under SansaExpress but the External memory card is shown occasionaly or not shown at all, but it is present and the card is sensed by the Sansa Express itself ( so card is not bad ). Now if the external memory card is formated through sansa express, it is shown again as external memory. Now if the device is taken out and again plugged in in laptop / pc, again the external card is not shown or recognised.
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