MXL AC-44COBALT Miniature USB Conferencing Microphone (Cobalt Blue)MXL AC44 Overview Give people in the boardroom or conferencing room the ability to communicate clearly and effectively over VoIP with the MXL AC 44, a USB boundary microphone. Styled here in a white finish, the AC 44 is tailormade for specialized industries, from professional conference rooms to telemedicine applications. Anywhere communication is key and space is at a premium, the AC 44 will come in handy to facilitate digital voice communication,