Hyper-fast 10Gbps speeds – Next-gen speeds up to 10X faster than gigabit Ethernet for quick file transfers, smooth 4K streaming and low-latency gaming. Go-further fiber optics – The latest technology for high-speed transmissions over much-greater distances than copper cables. Stylish built-in cooling – Stylish aluminum heatsink efficiently expels heat for reliable non-stop operation. Automatic prioritization – Built-in QoS technology automatically boosts bandwidth to important streams or games. Direct-attach copper (DAC)– With SPF+ Cage, DAC connections are also compatible.