Genuine 4-way x16 graphic power - Quad Strength Graphic Power – 4-Way PCI-E Gen3 x16 link supporting NVidia GeForce SLI and AMD CrossFireX on demand - Supreme Power Solution – Premium components deliver industry-leading power efficiency - 5-Way Optimization by Dual Intelligent Processors 5 – One click, total system optimization - Superb storage flexibility– onboard M.2 x4 and support for both ASUS PIKE II and ThunderboltEX II cards - Easy maintenance–ASUS Q-Code Logger, an easy-maintenance button and Dr. Power LED displays unusual power statuses Quad Strength Graphic Power The Intel X99 chipset-based workstation motherboard features on-demand NVIDIA® GeForce® SLI™ and AMD CrossFireX™ technology, plus hassle-free troubleshooting features for minimized downtime. Four PCI Express 3.0 x16 slots enable extreme graphics power The X99-E WS can carry up to four dual-slot graphics. It supports 4-Way NVIDIA® Geforce® SLI™ and AMD CrossFireX™ x 16 Link, making it an excellent choice for graphics professionals who depend on powerful graphics in areas such as design and modeling, medical research, plus processing-intensive simulation and rendering applications. In addition to graphics cards, extensive X99-E WS expandability offers ample room for RAID cards, PCI Express-based solid state storage drives, video capture cards, and other components. Supreme Power Solutions ASUS X99-E WS couples innovative thinking with premium components to deliver industry-leading power efficiency. Carefully engineered with Beat Thermal Chokes made of highly conductive and efficient gold-treated coating for minimal-loss power delivery and integrated Dr.MOS MOSFET that both saves space and reduces operating temperatures. For the latest workstation motherboard, ASUS introduce the industry's most durable 12K solid Import charges may apply to your purchase. Find out whether these apply here: http://www.whatsmyduty.org.nz/