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 100M net-work 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 supply interface, 1x24Pin power supply interface. Item Type: X79 Dual CPU Motherboard. Mainboard Type: ATX. Main Chip: X79 series. 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 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 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 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 Slotsand other ports, are subject to change without prior notice. Does not affect the use, understand, . Colour:black Material:PCB Size:281x255mm Package Contents: 1 x Motherboard 2 x E5 2640 CPU 1 x SATA Cable(the appearance and color are random, 't accept the specified ) 1 x Switch Cable(random colors, 't accept the specified color) 1 x Baffle(the appearance and color are random, 't accept the specified ) 1 x Thermal Grease(the appearance and color are random, 't accept the specified ) 1 x Thermal Pad(the appearance and color are random, 't accept the specified ) 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.