Yealink MSpeaker II is specially designed for video conferencing room, to award you a better sound in a meeting room. Ithas two built-in speakers, providing powerful output to cover middle even large meeting room. Working with Yealink microphone and Yealink Noise Proof Technology, it brings a crystal and vivid audio experience to everyone.MSpeaker II supports PoE, which enables simple and easy deployment, in this way, power supply, audio data transmissionand signal control unifies as one, sharply reducing the complex installation procedures as well as the costly expenses.And MSpeaker II also supports 3.5mm AUX input to be compatible with more video conferencing solution.