CQ40-528TX Motherboard?

Dear All,
I want to know the Motherboard Part no for
Compaq Presario CQ40-528TX Notebook PC

Ordered number CND9310YN7
Service digit VH833PA#AB4

It has Intel processor with dedicated nvidia art...

Can some cardinal help me retired with the motherboard part none for this laptop.....

Thanks all for your valuable feedback....