Desktop Motherboard 6 SATA3.0 8 DDR4 DIMM 32Gbps 2 NVME M.2 12 Phase Power Computer Motherboard for PC Replacement Item Type: Desktop Motherboard Material: Printed Circuit Board Chipset: X99 Motherboard Framework: ATX Motherboard Size: Approx. 295 x 280mm / 11.6 x 11.0in ( Manual Measurement, Slight Error May Exist ) CPU Slot Type: Supports LGA 2011 3 Netword Card Chip: 1000Mbit Netword Card Chip Graphics Card Slot: 2 x PCI E 16X Gen 3.0 Video Interface: Requires PCI E Discrete Graphics Card Supported Memory Type: 8 x DDR4 DIMM Maximum Memory Capacity: 128GB (16GB For A Single) SATA Interface: SATA3.0 x 8 Audio: Integrated ALC Six Sound Channel Chip USB Interface:USB3.0 x 4, USB2.0 x 4, Front USB2.0 Pin x 1, Front USB3.0 Pin x 1 M.2 Interface: NVME PCIE Gen3 X4, NVME PCIE Gen3 X4/NGFF Mouse And Keyboard: PS/2 Mouse Keyboard Interface Expansion Interface: PCI E 1X Expansion Slot x 2 Power Supply: 24 Pin x 1, 8 Pin x 2 Battery Type: CR2032 Button Battery (Inbuilt) Battery Capacity: 240mAh The Motherboard Is Fixed In The Main Box, And Then Connected According To The Corresponding Marked Connector. No Power Problem: When The Device Cannot Be Turned On And The Power Indicator Is Off, Please Make Sure That The Power Supply Is Connected And Works Normally. If Your Cpu Fan Is Installed Correctly, You Can Also Tell If The Power Supply Is Working Properly By Determining If The Fan Is Working Properly. 1. Check The Power Supply Of The Power Adapter A. Check Whether The Power Cable Is Connected And The Socket Is Properly Plugged, As Shown In The Following Figure. If The Extension Cable Has A Main Power Switch, Make Sure It Is On. B. Replacing The Extension Cord And Socket Can Help Solve The Problem. Check Whether The Mainboard Power Supply Is Correctly Connected: 1. Ensure That The Power Cable Of The Power Adapter Is Correctly Inserted Into The Atx Power Port. The Motherboard May Contain Both 24pin Eatxpwr And 8pin Eatx12v, Make Sure That Both 8pin Eatx12v And 24pin Eatxpwr Are Connected To The Power Adapter. The Location And Number Of Power Ports May Vary From Model To Model, Some Motherboards May Contain 24pin Eatxpwr And 4pin Eatx12v, Both Ports Should Be Linked To The Power Adapter Not On: When You Press The Power Button To Start The Computer, The Fan And Q Led Indicator /Qcode Do Not Respond. Please Follow The Instructions Below To Troubleshoot The Problem: 1. Verify That The Power Adapter Is Correctly Plugged Into The Atx Power Port By Following The Steps Above To Troubleshoot The Power Supply Problems On The Mainboard. 2. Keep The Cpu, Cpu Cooling Fan And A Separate Ram Video Memory On The Motherboard. Remove All Usb Devices And External Cards From The Motherboard, Including Mouse, Keyboard, Card Reader, Flash Drive, External Hard Disk, External Pcie Card, Etc. Remove All Cables From The Mainboard, Including The Network Cable, Audio Cable, And Display Cable (Hd Multimedia Interface/Vga/Dvi/Dp). Then Try Turning The Computer On. If It Works, Maybe The Problem Is The External Device Removed. Reconnect The External Devices One By One Until You Determine Which External Device Or Wire Is Causing The Problem. 3. Clear The Cmos.