District Technology Services (DTS) has tested Lightning-to-VGA adapters on several room presentation systems throughout the district, and we have seen intermittent results with them. The VGA output from the adapter is not amplified, so depending upon the length of cables within the wall and the type of system, there is a very good chance that these adapters will not work with any given room presentation system. DTS does not recommend or support these adapters.
Chromebook Laptop Computers
DTS has tested HDMI-to-VGA + audio adapters on several room presentation systems throughout the district, and we have seen intermittent results with them. We have had better luck recently, but DTS does not recommend or support a specific adapter. If you would like to try one in your building, it would be best to order a single adapter to start to verify functionality before purchasing a large quantity.
As district iPads are distributed, AirServer is available for installation through the Self Service application on MacBook Air laptop computers. Although, DTS does not recommend using AirServer due to the instability of the software.
As an alternate, the Apple QuickTime Player application supports viewing an iPad screen in a way that is suitable for many presentations. Check out this district Knowledge Base article entitled, iPad Projection with USB-to-Lightning Cable.
At this time, we do not have a presentation option that works consistently with Chromebook laptop computers in our district environment.