Yes it is possible as the chipset supports it. Now your motherboard manufacturer or system builder may have limited this feature.
You can find the supported features here page 283:
Thanks BigThor for the link.
i understood that dual-head is available, but an electrical adaptater/converter have to be used to convert sDVO signal in signal that CRT or Flat panel can manage.
I hope the provider of the embedded motherboard put the correct component which avoid to use ADD2 or MEC extension card...