Hello there, 

This is my first question in this group, which is about the power 
management between Android-based device and a USB-client. 

Is it possible for Android to power off (or suspend) and on (or resume) a 
connected USB-device, i.e. sensor or keyboard, periodically? 
How is responsible for the power management, is it Android or the client 
(the attached device)?

------------------- Example of USB host and USB-client---------------

<https://lh3.googleusercontent.com/-MT3zipZtAYE/VbFe_aKl-ZI/AAAAAAAACYs/CSTm1LyDKxU/s1600/2015-Hot-Sale-Universal-Android-Robot-Micro-USB-OTG-Cable-Host-Adapter-for-Samsung-Galaxy-S3.jpg>























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Thanks in advance, 

Regards, 
Amjad 

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