5 pin mini-USB plug connector at the cable of the AC adapter
|1||+5 VDC||PC USB Pin 1 (+5 VDC).|
|2||USB Data-||shorted to pin x in charger cable.|
|3||USB Data+||NC - Not Connected|
|X||Shorted to pin 2; shorted to pin 4 via 165KOhm resistor in charge cable.|
|4||GND||PC USB pin 4 (GND). Shorted to pin X via 165KOhm resistor in charge cable.|
- A 165k resistor between pin 2 and 4 is required to enable the charge process. The resistor produces ~1.5vdc on the x pin that is suitable for RAZR V3m and Motorola Q (which works from ~1.2vdc to ~1.9vdc).
- To charge the Motorola RAZR V3 through a simple USB cable (without the resistor) you need a PC driver software.
- The x pin is used by the phone to detect the type of device attached to the port. Shorting Pin 2, 3 and x, put the phone into handsfree/carkit mode and the LCD backlight will ignore timeout settings and stay on.