Design, 2-Way CrossFire™ Multi-Graphics, USB 3.1 Gen2 Type-A, M.2 Thermal Guard, Intel GbE LAN with cFosSpeed, Smart Fan 5, Dual M.2, Dual Armor with Ultra Durable™ Technology, DualBIOS, CEC 2019Supports 9th and 8th Gen Intel® Core™ ProcessorsDual Channel Non-ECC Unbuffered DDR4New 10+2 Phases Digital PWM DesignDual Ultra-Fast M.2 with PCIe Gen3 X4 (1 with Thermal Guard) & SATA interface2-Way CrossFire™ Multi-Graphics Support with PCIe Armor and Ultra Durable™ DesignIntel® Native USB 3.1 Gen2 Type-AIntel® GbE LAN with cFosSpeed Internet Accelerator SoftwareUltra Durable™ 25KV ESD and 15KV Surge LAN ProtectionHigh Quality Audio Capacitors and Audio Noise Guard with LED Trace Path LightingSupport RGB Lighting Effect in Full ColorsCEC 2019 Ready, Save Power With a Simple ClickSmart Fan 5 features Multiple Temperature Sensors and Hybrid Fan Headers with FAN STOPLightning-Fast Intel® Thunderbolt™ 3 AIC SupportIntel® Optane™ Memory ReadyCPUSupport for 9th and 8th Generation Intel® Core™ i9 processors/Intel® Core™ i7 processors/Intel® Core™ i5 processors/Intel® Core™ i3 processors/Intel® Pentium® processors/Intel® Celeron® processors in the LGA1151 packageL3 cache varies with CPU(Please refer "CPU Support List" for more information.)ChipsetIntel® Z390 Express ChipsetMemory4 x DDR4 DIMM sockets supporting up to 128GB (32GB single DIMM capacity) of system memory**** Please note that the support for system total memory size depends on the CPU installed.Dual channel memory architectureSupport for DDR4 4266(O.C.) / 4133(O.C.) / 4000(O.C.) / 3866(O.C.) / 3800(O.C.) / 3733(O.C.) / 3666(O.C.) / 3600(O.C.) / 3466(O.C.) / 3400(O.C.) / 3333(O.C.) / 3300(O.C.) / 3200(O.C.) / 3000(O.C.) / 2800(O.C.) / 2666 / 2400 / 2133 MHz memory modulesSupport for ECC Un-buffered DIMM 1Rx8/2Rx8 memory modules (operate in non-ECC mode)Support for non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modulesSupport for Extreme Memory Profile (XMP) memory modules(Please refer "Memory Support List" for more information.)Onboard GraphicsIntegrated Graphics Processor-Intel® HD Graphics support:1 x HDMI port, supporting a maximum resolution of 4096x2160@30 Hz* Support for HDMI 1.4 version and HDCP 2.2.Maximum shared memory of 1 GBActual support may vary by CPU.AudioRealtek® ALC892 codecHigh Definition Audio2/4/5.1/7.1-channelSupport for S/PDIF OutLANIntel® GbE LAN chip (10/100/1000 Mbit)Expansion Slots1 x PCI Express x16 slot, running at x16 (PCIEX16)* For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.1 x PCI Express x16 slot, running at x4 (PCIEX4)4 x PCI Express x1 slots(All of the PCI Express slots conform to PCI Express 3.0 standard.)Multi-Graphics TechnologySupport for AMD Quad-GPU CrossFire™ and 2-Way AMD CrossFire™ technologiesStorage InterfaceChipset:1 x M.2 connector (Socket 3, M key, type 2242/2260/2280/22110 SATA and PCIe x4/x2 SSD support) (M2A)1 x M.2 connector (Socket 3, M key, type 2242/2260/2280 SATA and PCIe x4/x2 SSD support) (M2M)6 x SATA 6Gb/s connectorsSupport for RAID 0, RAID 1, RAID 5, and RAID 10* Refer to "1-7 Internal Connectors," for the installation notices for the M.2 and SATA connectors.Intel® Optane™ Memory ReadyUSBChipset:1 x USB 3.1 Gen 2 Type-A port (red) on the back panel7 x USB 3.1 Gen 1 ports (5 ports on the back panel, 2 ports available through the internal USB header)4 x USB 2.0/1.1 ports (2 ports on the back panel, 2 ports available through the internal USB header)Internal I/O Connectors1 x 24-pin ATX main power connector1 x 4-pin ATX 12V power connector1 x 8-pin ATX 12V power connector1 x CPU fan header3 x system fan headers1 x RGB LED strip header6 x SATA 6Gb/s connectors2 x M.2 Socket 3 connectors1 x front panel header1 x front panel audio header1 x S/PDIF Out header1 x USB 3.1 Gen 1 header1 x USB 2.0/1.1 header