USB 2. USB Asus X54L WiMAX. It was first introduced in by IBM. Microphone in The socket where a microphone is connected to the device. Docking connector Connector used to attach a mobile electronic device simultaneously to multiple external resources. The dock connector will typically carry a variety of signals and power, through a single connector, to simplify the process of docking the mobile device. A dock connector may be embedded in a mechanical fixture used to support or align[…]