Enhanced mini-USB

While regular USB connectors are empty on the other side, EMU has more pins intended for headsets.

True breakout cables which provide all connections are unavailable, thus a phone cannot be charged at the same time as a headset or headphones are inserted, even for EMUs with extra pins.

Verizon Wireless is the first company to require first-party battery chargers, having colluded with Motorola[citation needed] to put an arbitrary 1.4 volts on pin X.

Without this connection, the phone will refuse to charge, displaying "unauthorized charger" despite receiving the proper current.

The phone will charge while connected to a personal computer only if the PC is running a special device driver.