Add the extra reach conference rooms demand without changing the core VC520 PRO system. The AVer VC520 PRO Expansion Microphone is designed to extend voice capture for meetings where participants sit farther from the main unit, helping remote teams hear discussion with greater consistency. For IT teams standardizing room kits, this accessory keeps the deployment simple: one purpose-built expansion mic for the VC520 PRO platform, with no need to spec a separate audio subsystem. That makes it a practical choice for medium and larger huddle spaces, executive conference rooms, and training rooms where speech clarity matters more than speaker volume. Compared with generic desktop microphones, a matched expansion mic is easier to support and more predictable in performance. It helps preserve the audio experience users expect from the VC520 PRO while reducing the need to push the main unit harder than the room layout allows. For organizations investing in reliable collaboration rooms, this is the kind of accessory that protects call quality and reduces friction for every meeting.