Thanks for posting on the support community.
The issue you have raised regarding your ActivBoard sounds like it may be relating to a connection issue.
I would recommend testing a shorter USB cable directly to your ActivBoard bypassing any wallboxes or connection plates in use.
Please also ensure that you are using the latest version of the driver.
This can be downloaded from article 10902 on http://www.PrometheanKB.com.
If you are still having issues I would recommend contacting Promethean Technical Support directly regarding this.
Promethean Technical Support
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