Accessory Will an OTG USB to MicroSD adapter work for file storage?

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http://androidforums.com – I'm hoping someone has tried this and can give me a definitive answer. With an adapter like this: Amazon.com: eForCity Micro USB OTG to USB 2.0 Adapter Compatible with Google Nexus 7: Electronics Can you attach a flash drive or card reader, to expand the storage capacity? Or is does this adapter only work for peripherals like a keyboard or mouse? I saw another post about this adapter working for file storage on a rooted device, but that post author was unsure if it worked on non-rooted devices. I am leaning towards the ASUS Infinity because of the expandable memory and the brighter scree (General)