GIGABYTE X299 AORUS MASTER EATX (Black/Gunmetal, RGBs, 3x M.2, 3-Way SLI/CrossFire, 2.5Gbps Ethernet, 802.11ac WiFi)
• Supports 9th Gen Intel® Core™ X Series Processors.
• Quad Channel Non-ECC Unbuffered DDR4, 8 DIMMs.
• Intel® Optane™ Memory Ready.
• 12 Phases Digital VRM Solution with Smart Power Stage.
• Advanced Thermal Design with Fins-Array and 6mm Heatpipe.
• Realtek 2.5GbE onboard and Intel® Gigabit LAN with cFosSpeed.
• Onboard Intel 802.11ac 2x2 Wi-Fi & AORUS Antenna.
• 130dB SNR AMP-UP Audio with High-End ESS SABRE 9218 DAC, ALC1220 and WIMA audio capacitors.
• USB TurboCharger for mobile device faster charging support.
• RGB FUSION with Multi-Zone RGB LED Light Show design, support Addressable LED & RGB LED strips.
• Smart Fan 5 features Multiple Temperature Sensors and Hybrid Fan Headers with FAN STOP.
• Front USB 3.1 Gen 2 Type-C™ Header.
• Triple Ultra-Fast M.2 with PCIe Gen3 x4 interface with Triple Thermal Guards.
• USB DAC-UP 2 with Adjustable Voltage.

Asus PRIME X299- DELUXE II ATX (2x M.2, 3-Way SLI, Wi-Fi, 5G LAN, RGB Lighting)
 
ASUS X299 WS SAGE (Black/Gunmetal, 2x M.2, 4-Way SLI/CrossFire, Dual GbE, Dual U.2)
Features
• Quad-GPU Graphics Power: Fits up to four dual-slot graphics cards and supports 4-way NVIDIA® SLI™ or AMD CrossFireX™ GPU configurations.
• 5-Way Optimization: One-click, system-wide tuning, delivers optimized overclocking and intelligent cooling for a diverse range of workloads.
• Industry-Leading Cooling Options: Comprehensive controls for fans and water pumps, via Fan Xpert 4 software or the acclaimed ASUS UEFI.
• Ultra-Efficient VRM Heatsink: Metal-fin-array design maximizes surface area for heat dissipation to enable unthrottled performance.
• ASUS Control Center: A software utility that provides convenient, secure and cost-saving centralized IT management for small- and medium-sized businesses.
• Ultra-Fast Storage: Up to 32Gbps dual M.2 and U.2, plus up to 10Gbps USB 3.1 Gen 2 with Type-A and Type-C ports on-board and a front-panel connector.

Important – Please Note: The U.2 connectors are only supported on 44-Lane CPUs.