The OTG device with the A-plug inserted is called the A-device and is responsible for powering the USB interface when required and by default assumes the role of host. The OTG device with the B-plug inserted is called the <answer>B-device</answer> and by default assumes the role of peripheral. An OTG device with no plug inserted defaults to acting as a <answer>B-device</answer>. If an application on the <answer>B-device</answer> requires the role of host, then the Host Negotiation Protocol (HNP) is used to temporarily transfer the host role to the <answer>B-device</answer>.
The OTG device with the B-plug inserted is called what?
B-device