Note: Dual motherboards do not support CPUs starting with E5-16XX (V1, V2, V3). This is because the CPU cannot form a dual CPU system. Support: a combination of the same model of CPU or a combination of different models the same number of cores. Not supported: Mixed use of different core numbers, for example: 4 cores + 6 cores cannot be mixed, 6 cores + 8 cores cannot be mixed Dual CPU driver, 7+7 phase power supply, dual heat sink. X79 chip, four channel DDR3 memory, all solid state capacitor, dual PCI-E graphics card. Integrated chip sound card/net-work card, main chipset X79, integrated RTL8111H network card. CPU platform, CPU socket LGA 2011, supports 2 CPUs at the same time. Memory type DDR3 1866/1600/1333/1066MHz, memory slot 4xDDR3 DIMM. 2x8Pin power suppy interface, 1x24Pin power supply interface. Expansion Slot: PCI-E slot 2 x PCI-E X16 graphics slot; PCI-E slot 3xPCI-E X2; 2x USB3.0 pins; 6x USB2.0 pins (3 groups); 2xSATA3.0 interface; 4xSATA2.0 interface; 1xNVME M.2 interface I/O Interface: PS/2 interface PS/2 keyboard and mouse universal interface; 1xRJ45 net-work interface; 6xUSB 3.0 interface; 2xUSB 2.0 interface; AUX port Item Type: X79 Dual CPU Motherboard Mainboard Type: ATX Graphics Card Slot: PCI-E 3.0 16X dual interface Expansion Slot: 7+7 power supply CPU Slot: 7.1 channel CPU Type: LGA2011x2 Memory Slot: DDR3 4 slot 4 channel Memory Capacity : 32Gx4 DDR3 Memory Speed: 1866/1600/1333/1066 SATA Interface: SATA3.0x2 SATA2.0x4 USB Interface: USB3.0x2 USB2.0x12(including expansion) M.2 Interface: PCIE X4 3.0 NVME Due to different batches of productions, there might be some difference between the pictures you've seen and the motherboard you , for example, retail boxes, colors of DIMM slots, SATA ports, PCI or PCI-E Slots and other ports, are subj to change without prior notice. Does not affect the use. Application: Desktop Usage Scenario: Gaming Usage Scenario: Household Usage Scenario: Office color:Black Material:PCB size:281 x 255mm Package Contents: 1 x Motherboard 1 x SATA Cable(random color and random appearance, cannot select specified color and appearance) 1 x Switch Cable(random color, cannot select specified color) 1 x Baffle(random color and random appearance, cannot select specified color and appearance) 1 x Thermal Grease(random color and random appearance, cannot select specified color and appearance) 1 x Thermal Pad(random color and random appearance, cannot select specified color and appearance) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.