Franc Zabkar wrote:

What is that supposed to mean? Is it so hard for you to quantify what
*you* mean by "standard cable"? I have never seen a Blackberry or
Motorola mini-USB cable. Have you? What's on either end? Four pins or
five pins? Is the ID pin grounded or floating? At which end?

The connector is standard, but the Motorola phone recognizes a Motorola
charger by circuitry in the charger that uses the fifth pin as a sense
pin. Hence a 5 pin mini-USB cable connected to the phone, with only +5V
and GND won't charge the phone because the phone will know that it isn't
connected to a Motorola charger (or an after-market charger with the
same circuitry). The phone will display "Unauthorized Charger."