This adapter is pretty nice, small and durable. works fine with any 2.0 usb flash drives.I tested (Kingston 2Gb, 4Gb, 16Gb ; Patriot 32gb) but when I tried to connect Verbatim USB 3.0 64gb - the phone(S3) does recognized it as empty drive, also I tried Microcenter USB3.0 16Gb (RED) - same story.