Also, if you do add a microSD card to your Roku 2XS, it's a waste to get anything larger than a 2 GB drive. Roku will only utilize that much of the card. And, like @StreamerUser said, it's only app storage and will only speed up subsequent loads of an app. The responsiveness of the device and apps overall will not be impacted.
DBDukes Roku Community Streaming Expert Note: I am not a Roku employee.
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