SUPERMICRO MBD-X9DBL-3F-O Server Motherboard Dual LGA 1356 (Socket B2) Up to DDR3 1600 CPU Type: Dual Intel Xeon E5-2400 series QPI: Up to 8 GT/s Other Chipset: Intel C606 Chipset Number of DDR3 Slots: 6 x 240pin Maximum Memory Supported: 192GB R/LRDIMM ECC Supported: Yes Registered: Yes PCI Express 3.0 x16: 1x PCI-E 3.0 x16