Supermicro X9DAI-O LGA2011/ Intel C602/ DDR3/ SATA3&USB3.0/ A&2GbE/ EATX Server Motherboard CPU: Dual?LGA2011; Supports Intel Xeon E5-2600 Series Processors; Cache up to 20MB; QPI up to 8 GT/s Chipset: Intel C602 Memory: 16x 240pin DDR3-1600/1333/1066/800 DIMM Slots, Supports up to?512 GB ECC/REG Memory or up to?128 GB ECC/Unbuffered Memory Slots: 3x PCI-Express 3.0 x16 Slots; 3x PCI-Express 3.0?x8 Slots (one runs at x4) SATA: 8x SATA2 Ports, 2x SATA3 Ports; Supports RAID 0, 1, 5, 10 Audio: Realtek ALC889 7.1-Channel High Definition Audio CODEC