09-28-2014 12:19 PM
Dear member of SanDisk Community, welcome.
Please, verify your mobile device is compatible with Dual USB Drive and you have properly connected the drive to your mobile device.
Compatibility List: http://kb.sandisk.com/app/detect/
SanDisk Ultra Dual USB Drive is designed to be compatible with USB-On-The-Go enabled Android devices.
Please, insure the dual drive is fully inserted into the microUSB port on your mobile device.
Some mobile devices may disable power to the SanDisk Dual USB drive when the device's battery reaches a critically low level.
This may cause the Dual USB Drive to no longer be recognized until the battery is charged and the device is power cycled.
Some mobile device protective cases interfere with the full and proper connection between SanDisk Ultra Dual USB Drive and the microUSB port of mobile devices. You may have to remove the protective case on your mobile device to obtain a full and proper connection.
- Accessing SanDisk Ultra Dual USB Drive on a Mobile Device: http://kb.sandisk.com/app/answers/detail/a_id/8670
Regards, Alfred. (Google translated)