suitable for a wide variety of devices
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Description Micro-USB Pin
1 VCC +5V, up to 500 mA by USB 2.0 standard 1
2 shorted or connected via resistor. In order to recognize charger 
this lines should be tied via resistor 0-200 Ohm
3 3
5 GND 5

Original (genuine) chargers are:

  • Motorola CH700
  • Sony Ericsson CLA-70
  • BlackBerry miniUSB ASY-07559-001
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4 pin USB A / USB B receptacle connector layout
4 pin USB A / USB B receptacle connector
at the PC or other host device
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