StarTech.com Arista Networks QSFP-40G-SR4 Compatible QSFP+ Module, 40GBASE-SR4, 40GbE Multimode Fiber MMF Optic Transceiver, 40GE Gigabit Ethernet QSFP+, MPO Connector, 150m, 850nm, DDM - Lifetime Warranty (QSFP-40G-SR4-AR-ST) - QSFP+ transceivermodul - 40GbE