X99 PR9 Motherboard Specification: Motherboard Model: X99 PR9 Processor: Supports a full range of processors with LGA 2011-3 pin. (Such as Xeon E5-XXXX-V3, E5-XXXX-V4, Core i7-6800k, etc.) Motherboard LGA 2011-v3 Chipset: Intel Q87 CPU Socket: LGA 2011-3 Memory Slot: 2 x DDR4 memory slots, support up to 128GB Support Memory Type: Supports DDR4 2133/2400MHzm, non-ECC, ECC, and RECC memory. Memory Channel: Supports Dual-Channel mode M.2 Slot: SATA(NGFF)/NVME M.2 PCIe Slot: PCIe 3.0 X16; PCIe 2.0 X1 SATA Interface: SATA3.0*1, SATA2.0*2 USB Port: 2*USB 3.0, 8*USB 2.0 Power Connector: 24 + 8 Pin FAN Interface: 4-pin*2 Other Interfaces: 3* Rear Audio, 1* Front Audio Port Network Interface: Realtek 8111H 1000Mbps RJ45 Ethernet Sound Card: Realtek ALC897 7.1 Channels Quick Boot Button: F11 RAID: Not supported Overclocking: Not supported M.2 Mode Switching: Support NVME M.2 or SATA(NGFF) M.2, default mode is NVME M.2; Size: 215mm*185mm Form Factor: FlexATX Applicable Hard Disk: Supports 2.5-inch SATA SSD, 3.5-inch HDD, MVME M.2 SSD, SATA M.2 SSD. This x99 motherboard can boot without installing a graphics card, but you cannot access to the system. Packing List: X99 PR9 Motherboard *1 CPU Cooling Fan Bracket *1 SATA Cable *1 I/O Shield *1