Logitech Group HD Video and Audio Conferencing System for Big Meeting Rooms Amazingly affordable video conferencing system: All-in-one design brings professional video conferencing to any meeting space Easy video conferencing: Launch video meetings with a plug-and-play USB connection to a laptop and your video conferencing program of choice Perfect for mid to large sized conference rooms: 90-degree field of view and 20 ft. diameter audio range optimized for groups of up to 14 people (20 people with optional expansion mics) Razor sharp video: HD 1080p video with autofocus, digital pan/tilt/zoom and premium Zeiss-certified optics Full-duplex speakerphone: HD audio quality, four integrated omni-directional mics and advanced noise cancellation for crystal-clear conversations Compatible with Mac and PC: Conduct video conferences with the familiar computers your people already use Use your video conference app of choice: Works with most UC, video conferencing and cloud communication apps Professional-grade certifications: Optimized for Microsoft Lync 2013; Certified for Skype for Business; Cisco Jabber and WebEx compatible Windows 7, Windows 8.1, Windows 10, Mac OS  10.10 or higher USB 2.0 port Works with most video conferencing apps and services