I understand this H11DSi-NT motherboard is of the E-ATX form factor but I see some sites putting SSI EE as the form factor for cases that are 12”x13” and I understand the screw hole alignment is different. I just wanted to make sure so I purchase the correct case for it.
Answer
It is recommendable to use a chassis that follows the E-ATX motherboard standard, although the size is the same as the SSI-EEB standard, not all screw holes line up the same.