EugenioG,
We would like to inform you this motherboard has been discontinued, and Intel will not provide future BIOS or software updated to support new operating systems or improve compatibility with third-party devices and software products.
The maximum memory supported by the motherboard is 4 GB, even though you are using 2 GB on each DIMM for the total of 8 GB, the board is going to use only 4 GB.
I am going to research on this product in order to respond your questions with accurate information.
Regards.