40GBASE-SR4, 4 lanes, 850 nm MMF transceiver module
Cisco QSFP-40G-SR4, Fiber optic, 4000 Mbit/s, QSFP+, LC, 50/125 µm, SR
Cisco QSFP-40G-SR4. SFP transceiver type: Fiber optic, Maximum data transfer rate: 4000 Mbit/s, PCI bus: QSFP+. Certification: MSA