The MXL AC-404 USB web conferencing microphone is an excellent conference room mic for video and web chat. This high quality capsule boundary microphone offers clear voice quality on conference calls, allowing easy, intelligible conversation. The AC-404 captures sound from a 25 ft. radius, making it ideal for conference rooms. It is compatible with all free and paid web conferencing services. The AC-404 conference mic uses boundary microphone technology, built-in custom circuitry, and automatic gain control to produce smooth, quiet, and professional sounding conferences, no matter where you are. It works well with echo canceling software and offers plug and play compatibility with a PC or Mac computer.