Netgear 2x40G QSFP+ Port Card - For Data Networking, Optical NetworkOptical Fiber40 Gigabit Ethernet - 40GBase-SR4, 40GBase-LR4, 40GBase-CR4 - 2 x Expansion Slots - QSFP+

Expansion Module with data networking application/usage for maximum productivity and usability With 40GBase-SR4 technology, enjoy up to 40Gbps data transfer rate over optical fiber cable 40Gigabit Ethernet - Designed to provide high-performance Ethernet connection while minimizing power and CPU cycles utilization Optical fiber cable compatible - Spans afar and provides speedy data transmission rates between servers and network components Expansion Module is the single answer to all your desired and specified application execution and expansion needs