StarTech.com Citrix 3013936-E2 Compatible QSFP+ Module - 40GBASE-SR4 - 40GE Gigabit Ethernet QSFP+ Multi Mode Fiber (MMF) - 100 m DDM - Citrix 3013936-E2 Compatible QSFP+ - 40GBASE-SR4 40 Gbps - 40GbE Module - 40GE Gigabit Ethernet QSFP+ 850nm Multi Mode Transceiver - 100 m (328 ft) - MPO Connector DDM - Hot-Swappable & MSA Compliant - Lifetime Warranty