Hyper-Fast 10Gbps Networking ASUS XG-C100F enables up to hyper-fast 10Gbps networking, over fiber-optic or DAC cables. Just slide it into a PCI Express® 2.0/3.0 x4 slot to enjoy SPF+ connections that are up to 10X faster than gigabit Ethernet – perfect for large file transfers, 4K streaming and low-latency gaming. Go Further with Fiber Optics XG-C100F is compatible the latest fiber-optic networking technology. This enables high-speed, high-bandwidth transmissions to travel distances that are far greater than possible over traditional RJ-45 type copper transmission- Ideal for power users, small enterprise and data center. Stylish Cooling Heatsink An efficient aluminum heatsink keeps XG-C100F cool during high-performance applications, and adds a touch of style that elevates the card''s outlook above the network-interface-card crowd. Prioritize performance, automatically Built-in Quality-of-Service (QoS) technology automatically prioritizes bandwidth for your most important applications. Whether you''re transferring loads of files, streaming 4K media or engaging in online gaming, it''s easy to configure XG-C100F to ensure the important packets get through swiftly and smoothly.