I have a Nexus 7 2013 LTE TAB which has a micro USB port . I want to connect a USB flash drive . There are some dual type flash drives available in the market. I purchased one such type ( i ball 16 GB Hybrid dual pen drive with Micro-B & Standard USB interface pendrive). But that is not matching with my Nexus 7. Hence I want to know whether USB 3.0 & micro USB ports are same?