Hi
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The local service provider for Interactive Smart Boards was not very helpful. I did hover find a solution that was cheap and easy.
https://www.jaycar.com.au/5v-dc-3a-slim-power-supply-7dc-plugs/p/MP3480
[h=1]5V DC 3A Slim Power Supply 7DC Plugs works fine .[/h]
The 2nd smallest plug works even thought it looks like the centre is too big it works fine. cost was $24.95