StarTech.com HPE 747698-B21 Compatible QSFP+ Module, 40GBASE-SR4, 40GbE Multi Mode Fiber Optic Transceiver, 40GE Gigabit Ethernet QSFP+, MPO 400m, 850nm, DDM, HPE BladeSystem, c-Class - Lifetime Warranty (747698-B21-ST) - QSFP+ transceivermodul - 40GbE