SHANGZHAOYUAN E5 MR9S Motherboard, X99 LGA 2011-V3 Motherboard for Intel 5th/6th i7, XEON E5 V3/V4 series CPUsCommon Problems: 1. The diagnostic card appears on the “FF” code, may be the CPU is incompatible, CPU pins on the foreign body or power supply is not properly connected. You can use an eraser to wipe the metal fingers of the CPU to ensure cleanliness. 2. If the code “B7”, “B9”, “53”, “B0”, this is the motherboard did not Detect the memory problem. You can unplug the memory several times or use an eraser to wipe the metal fingers of the memory to solve the problem. 3. The installation of Win 10 system can avoid a lot of unnecessary trouble, without having to download any drivers on their own to use the computer normally. Tips: 1. If you need the motherboard to enter the BIOS, please press the “Del” key continuously after pressing the boot button. Please don't wait until the boot logo screen appears on the computer screen, because it's already too late. 2. If you need to enter the Quick Start Program, press the power on button and then press F11 continuously. E5 MR9S ATX Motherboard Specification: Main chipset: Intel B85 Motherboard structure: ATX CPU socket: Intel LGA 2011-3 (Support Intel 5th/6th i7, XEON E5 V3/V4) Memory slot: DDR4 (Support 2400/2133 MHz, ECC and Non-ECC) Maximum memory: 256GB PCIe slot: 2 * PCIe 3.0 X16 slots, 1 * PCIe 3.0 X4 slots and 2 * PCIe 2.0 X1 slots. Storage interface: 4 * SATA3.0, 2 * SATA2.0, 1 * NVME M.2, 1 * NGFF M.2. USB Port: 2 * USB 3.0, 6 * USB 2.0 Onboard LAN: 1 * Gigabit LAN Power connector: 24pin + 8pin DC Overclock: Not support Material: 8-layer PCB Motherboard size: 303mm x244mm Package list: 1*LGA2011-3 cooler bracket, 2*SATA cable, 1*small cooling fan, 1*motherboard.