Default USB OTG not recognizing

Hi! I've recently bought my nexus 7 (flo) but, no matter what I do it just won't read my USB. I've already tried nexus media importer and stickmount rooted and non-rooted and even installed elementals kernel. Please help, here's a screenshot attached.Click image for larger version

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LG Optimus One Thread

CyanogenMod 7.2 Nightlies
CyanogenMod Nightlies Changelog

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