You would think from this , it would be the correct cable..

"July 28, 2008
Nokia N810 miniSync Now Available

BoxWave is now shipping the miniSync for the Nokia N810! miniSync is an ultra-portable retractable cable that will synchronize and charge your Nokia N810!

You can find more information about the Nokia N810 miniSync and other Nokia N810 accessories. "
http://www.boxwave.com/news/news_1672.htm
http://www.boxwave.com/products/mini...-n810_3045.htm