SuperMicro X6DA8-G2 (I7525), Continued
Intel's 82546 is a dual GbE chip for PCI Express.
Due to the fact that all 24 PCI Express lanes are used (the x16 for regular PCIe graphics, the second one for attaching the 6700PXH and the third x4 one for secondary graphics), the network chip is attached via PCI-X.
The board comes with Adaptec's 7902W SCSI controller.
The SCSI controller can be upgraded to RAID 5 capabilities using a RAID Zero board.