Since Promethean has discontinued the legacy ActivBoard series, the official drivers are now hosted on Promethean’s legacy support page.
The primary source is ACTiSYS Corporation. Look for the "Downloads" or "Support" section. act-ir2012ul driver
ACT-IR2012UL driver — concise review
, the driver installation follows a quick 3–5 minute process: Automatic Detection: act-ir2012ul driver
Boop.