Features 1??With rear 4 USB3.0, mainboard's gigabit network card keeps high?speed stable connection. 2??Supports four generations of DDR4, mainboard is with eight memory slots, supports ordinary memory and ECC server memory. 3??And NVME PCIE X4 channel m.2 high?speed hard disk theoretical bandwidth can be up to 4GB / S. 4??Desktop motherboard installation is simple, which does not require particularly complicated operations. 5??After many inspections before leaving the factory, motherboard's quality is guaranteed, you can use it with confidence. Specification Item Type: Motherboard Model: X99 Sound Card: Chipset integrated chip sound card Motherboard Chip: For Intel X99 Gigabit Network Card: Integrated RTL8111H Gigabit network card Chip: Audio integrated 6-channel sound chip CPU Socket: LGA 2011-3 Memory Size Memory Type: DDR4 3000/2666/2400 / 2133MHz Memory Slot: 8 ?? DDR4 DIMM Expansion Slot: PCI-E slot 2 ?? PCI-E X16 PCI-E slot 2 x PCI-E X1 2 x USB3.0 connectors (1 set) 2 x USB2.0 connection pin (1 set) 8 x SATA3.0 interface 2 x NVME M.2 interface I / O PS / 2 keyboard or universal interface 1 ?? RJ45 network interface (Gigabit network card) 4 x USB 2.0 port 4 x USB 3.0 port Battery Model: CR2032 (not included) Motherboard Size: Approx. 281 x 295mm / 11.06 x 11.61in Package List 1 x Motherboard 1 x Iron plate 1 x PIN Cable