Supermicro X11DAi-N Workstation Motherboard - Intel Chipset - Socket P LGA-3647 - 1 x Retail Pack - Extended ATX - 2 x Processor Support - 2 TB DDR4 SDRAM Maximum RAM - 2.67 GHz, 2.40 GHz, 2.13 GHz Memory Speed Supported - RDIMM, DIMM, LRDIMM - 16 x Memory Slots - Serial ATA/600 RAID Supported Controller - 10, 5, 1, 0 RAID Levels - On-board Video Chipset - ASPEED AST2500 - 7.1 Audio Channels - Gigabit Ethernet - 2 x PCI Express x8 Slots - 4 x PCI Express x16 Slots - 2 x USB Ports - VGA - 1 :