Model:HUANANZHI Item Type: X99-AD3 V3.0 Motherboard Mainboard Type: ATX Main Chip: X99 series Graphics Card Slot: 2*PCI-E 3.0 16X 1*PCI-E 1X 1*PCI-E 4X Integrated Video Card: NO Power Supply: 6 power supply PCB Layers:10 Ethernet: Gigabit CPU Type: LGA 2011-3,X99-T8D / T8 / AD3 / BD3 / 8MD3 / 8M-T, 'T' stands for 'THREE', which means the motherboard USES DDR3 memory and only supports E5 2629V3/2649V3/2669V3/2696V3/2673V3/2676V3/2678V3,other type does not support or untested Memory Slot: 4*DDR3(4 channel) Memory Capacity Peak: 32Gx4 DDR3 Memory Speed: 1866/1600/1333 Memory type supported: non-ecc/reg ecc/ecc SATA Interface: SATA3.0x8 USB Interface: USB3.0x6 USB2.0x8(including expansion) M.2 Interface: M.2 NVME+M.2 NGFF Audio port:ALC662 5.1 channel Size: 283x215mm