Supermicro X11DDW-NT Server Motherboard - Intel Chipset - Socket P LGA-3647 - 1 x Retail Pack - Proprietary Form Factor - 2 x Processor Support - 1.50 TB DDR4 SDRAM Maximum RAM - 2.67 GHz, 2.40 GHz, 2.13 GHz Memory Speed Supported - RDIMM, DIMM, LRDIMM - 12 x Memory Slots - Serial ATA/600 RAID Supported Controller - 10, 5, 1, 0 RAID Levels - On-board Video Chipset - 4 x USB 3.0 Port - ASPEED AST2500 - 7.1 Audio Channels - 10Gigabit Ethernet - 2 x PCI Express x16 Slots - 4 x USB Ports - VGA :