1148 - There is no sound coming from the speakers
Using an amplifier and speakers/powered speakers, with your computer and ActivBoard system.
1080 - Calibration screen will not launch on Windows 8
How to calibrate your ActivBoard using a Windows 8 machine if the screen is not visible.
1058 - ActivBoard USB Cable Extensions
Promethean's recommendation for customers who require an extended cabling solution.