Support Intel LGA2011-3 platform processor 4 DDR4 memory slots, support quad-channel DDR4 2400/2133/1866MHz memory (depending on CPU) Maximum support 128GB Storage interface: 6 x SATA3.0 6Gb/s hard disk interface Expansion interface: 2 x M.2 2280 NVME PCIE X4 3.0 32Gb/s Expansion Slots: 1 x PCI Express 3.0 x16 slot 1 x PCI Express 3.0 x4 slot 1 x PCI Express 2.0 x1 slot Motherboard model: X99-QD4 motherboard CPU pin: Support Intel LGA2011-3 platform processor Memory slot: 4 x DDR4 memory slot Onboard Sound Card: Realtek High Definition Audio Onboard NIC: Realtek Gigabit NIC Power interface: 24pin+8pin Fan interface: 2 x CPU_FAN pin 1 x SYS_FAN pin Number of PCB layers: 6-phase power supply; 6 layers of PCB layers Rear panel interface: 1 x PS/2 keyboard and mouse interface; 4 x USB2.0; 2 x USB3.0; 1 x network interface; 1 x 3 hole audio interface Front panel interface: 2 groups of USB2.0 pins; 1 group of USB3.0 pins; 1 group of front audio pins; 1 group of COM pins; 1 group of boot pins Support system: Windows7 Windows10 Windows11 BIOS: AMI UEFI BIOS Motherboard specification: 245 x 190MM M-ATX form factor Material: PCB Colour: Black Note: The appearance of different batches of products may be different, which does not affect the use. Package Contents: 1 x Motherboard 1 x SATA Cable(Random Color And Appearance Do not accept designation) Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.