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					Originally Posted by TheBard  Thanks again for the information.  Lets see if I can summarize so far, in case others are interested in expanding the Clara's memory: If I have made any errors in my summary, please correct them!The OEM internal microsd card is 4GB, but the Kobo Clara can "see" 64GB or more.To increase the Clara's storage, the 4GB card must be cloned [copied to] to the larger card (thus transferring the firmware).Although Kobo recommends FAT32 formatting of the SDHC card, cards in the range of 64GB and above can use exFAT.The larger card should have a single partition.
 
Additional information:
 The Clara can be opened by carefully "splitting" the top and bottom portions, as shown in earlier photos.  When done, the halves can be snapped together.Class 10 cards have been used, because they have much higher speed capabilities than lower classes.  However, the maximum transfer rate is determined by the device.When purchasing the larger card, be careful - counterfeit cards are quite numerous.  Purchase from a reputable dealer.
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 Minor nits:  The original internal uSD card is 8GB not 4GB and I would recommend using CrystalDiskMark or similar to check the card speed before installing it.  Class 10 cards are basically optimized for large file transfers and the small block read/write speeds can be rather pathetic.  Again, SanDisk and Samsung seem to be consistently best at those small block numbers.