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Can't connect devices via USB

Good day!
I had seen many videos about connecting usb devices (like flash-memory, mouses, keypads e.t.c) to android phones. I use HTC Desire 400 (Android 4.1.1), so I had try it, but no one device powered.
I had try connect power to devices separately, but ineffectual (my phone just begin charging via this connection).
Can anyone explain what I need to do to connect HID devices to phone and how I can tune it programmatically ?
 
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