Explanation/Reference:
Explanation:
Content sharing
Two integrated digital presentation connectors are designed into the table, supporting the latest PC and Mac devices for local and remote content sharing. An additional third HDMI port is available for auxiliary input purposes such as a document camera.
Three 1080p, 30 fps content sources are supported when the system is not in a call.

Two 1080p, 30fps content sources are supported in call (IX5000 to IX5000 only).

One 1080p, 30fps content source is supported when calling other Cisco and H.264 BFCP-compliant

products.
Content can be shared on any of the 70" main displays or aux display(s).

Reference: http://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/ix5000-series/ datasheet-c78-733257.html