Amazon Kindle Fire HDX 7 POWERED (OTG) Micro-USB to USB 2.0 Adapter High Speed Data-Transfer Cable for connecting any compatible USB Accessory/Device/Drive/Flash/ and truly On-The-Go with Power Port! Finally, an outstanding OTG + Power high grade cable for your Amazon Kindle Fire HDX 7 at a reasonable price! Now you can power and connect your USB Device/Drive/Flash/Printer by plugging it in, and using it instantly! For data transfer with role swapping abilities, this customer cable is for those on the GO and want reliability NOW! Operate small USB peripherals by plugging in the adapter cable which transforms your mobile or portable device into a USB capable unit. CONNECTORS: Standard USB 2.0 port, Micro-USB OTG connector, Micro-USB Power Input Connector, Nanosecond recognization chipset. LENGTH = 4.5"