This adapter liked for the displayed power of 2 amps and compact side to close the hatch ashtray. I wanted to connect two devices simultaneously, and Coyote Tel. portable, or Coyote and GPS. But a double disappointment: it does not support the Blackberry 9900 Bold (which means that the power would not be 2.1 Amp ???) and one of the two adapters do not work at all (I destined to my professional vehicle ).