Asus WS X299 Pro/SE motherboard with Intel socket 2066, 128GB RAM, multi-GPU support, Intel Optane Memory, and Japanese-made audio capacitors.Specification:CPUBuild in Intel® Socket 2066 Core™ X-Series Processors *Refer to www.asus.com for CPU support listChipsetBuild in Intel® X299MemoryIntel® Core™ X-series Processors (6-core above) 8 x DIMM, Max. 128GB, DDR4 4133(O.C.)/4000(O.C.)/3600(O.C.)/2666/2400 MHz Non-ECC, Un-buffered Memory Intel® Core™ X-series Processors (4-core) 4 x DIMM, Max. 64GB, DDR4 4133(O.C.)/4000(O.C.)/3600(O.C.)/2666/2400 MHz Non-ECC, Un-buffered Memory *Hyper DIMM support is subject to the physical characteristics of individual CPUs. *Please refer to ASUS AVL for the latest update. *Actual memory frequency differs from Intel CPU types and memory module. Please check Intel official site for more detail about the memory types supported by each CPU.Multi-GPU SupportSupports NVIDIA® 3-Way SLI™ Technology Supports AMD 3-Way CrossFireX™ TechnologyPCI Slots44-Lane CPU- 2 x PCIe 3.0 x16 (x16 mode) 1 x PCIe 3.0 x16 (x8 mode) 1 x PCIe 3.0 x16 (x4 mode) 1 x PCIe 3.0 x4 (x4 mode) 28-Lane CPU 1 x PCIe 3.0 x16 (x16 mode) 1 x PCIe 3.0 x16 (x8 mode) 1 x PCIe 3.0 x16 (x4 mode) 1 x PCIe 3.0 x4 (x4 mode) 16-Lane CPU 1 x PCIe 3.0 x16 (x8 mode) 2 x PCIe 3.0 x16 (x4 mode) 1 x PCIe 3.0 x4 (x4 mode)StorageIntel® X299 Chipset: 1 x M.2 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (PCIE 3.0 x 4 mode) 1 x M.2 Socket 3, with M key, type 2242/2260/2280 storage devices support (both SATA & PCIE mode) 1 x U.2 connector 6 x SATA 6Gb/s port(s) Support Raid 0, 1, 5, 10 Support Intel® Rapid Storage Technology enterprise 5.1 for X-Series(6-core and above) CPU RAID Supports Intel® Smart Response Technology Intel® Rapid Storage Technology 15 Support Intel® Optane™ Memory ReadyUSBIntel® X299 Chipset: 6 x USB 3.1 Gen 1 port(s) (4 at back panel, 2 at mid-board) Intel® X299 Chipset: 6 x USB 2.0 port(s) (4 at back panel, 2 at mid-board) ASMedia® USB 3.1 Gen 2 controller: 3 x USB 3.1 Gen 2 port(s) (2 at back panel, Type-A + USB Type-CTM, 1 at mid-board)AudioRealtek® ALC S1220A 7.1-Channel High Definition Audio CODEC featuring Crystal Sound 3 – Impedance sense for front and rear headphone outputs – Internal audio Amplifier to enhance the highest quality sound for headphone and speakers – Supports: Jack-detection, Multi-streaming, Front Panel MIC Jack-retasking – High quality 120 dB SNR stereo playback output (Line-out at rear) and 113 dB (Line-in) Audio Feature: – DTS Connect – DTS Headphone:X – Audio amplifier: Provides the highest-quality sound for headphone and speakers – Premium Japanese-made audio capacitors: Provide warm, natural and immersive sound with exceptional clarity and fidelity – Unique de-pop circuit: Reduces start-up popping noise to audio outputs Separate layer for left and right track, ensuring both sound deliver equal qualityLANIntel® I210-AT, 2 x Gigabit LAN Controller(s)

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