Safewatts&reg; Micro USB 5 Pin to USB OTG Host Adapter Dongle On-the-go Cable - USB 2.0 Female to Micro USB Male for LG G2 Optimus G, Google Nexus 4 5 7, Samsung Galaxy S 3 III 4 IV, Gogle Nexus 7 and other Compatible Smartphones and Tablets Converts your Micro USB OTG capable tablet computer or Smartphone into a USB host, for connecting USB accessories Use with flash drive to download important app and software. or for any. Movie, Song, etc. Lets you use a USB charger / cable to charge and / or sync devices with a micro-USB power port. Download OTG USB HOST CONTROLLER from Andriod Market. Length : is about 10cm