Cisco QSFP-40G-LR4 Optical Transceiver are designed for use in 40 Gigabit Ethernet links over single mode fiber. They are compliant with the QSFP+ MSA, and IEEE 802.3ba 40GBASE- LR4. Digital diagnostics functions are available via an I2C interface, as specified by the QSFP+ MSA. Compatible Cisco Form Factor QSFP+ Max Data Rate 11.3Gbps data rate per wavelength Wavelength 1310nm Max Cable Distance 10km link length Connector Duplex LC Transmitter Type DFB CWDM Extinction Ratio 3.5dB Media SMF Power Consumption