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Why is it that flash drives cannot have such capacitors? Cost?
– nanofarad
Commented Jan 20, 2015 at 1:13
This feature requires to maintain power supply for 10ms for both NAND chip and internal controller. Higher charge capacity requires higher physical space. This does not fit in an SD card, this definitely does not fit in a microSD card. On USB flash drives, it depends on the actual shape of the flash drive.
– Jacen
Commented Jan 20, 2015 at 13:36

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