StarTech.com Cisco WSP-Q40GLR4L Compatible QSFP+ Module, 40GBASE-LR4, 40GbE Single Mode (SMF) Fiber SMF Transceiver, 40 Gigabit Ethernet LC 2km, 1270 to 1330nm, DDM, Cisco Firepower C9300 - Lifetime Warranty (WSP-Q40GLR4L-ST) - QSFP+ transceivermodul - 40GbE