JTOPTICS® 40Gbps transceiver module is for use in 40 Gigabit Ethernet links and 4x10G OTN client interfaces over single mode fiber. They are compliant with the QSFP+ MSA , IEEE 802.3bm 40GBASE ER4 and OTU3 requirements specified in ITU T Recommendation G.695 as adapted to a 40km interface. Digital diagnostics functions are available via an I2C interface, as specified by the QSFP+ MSA. The optical transceiver is RoHS compliant per Directive 2011/65/EU.JTOPTICS QSFP+ Optical Transceiver Module is designed for use in 40GBASE Ethernet throughput up to 40km over single mode fiber (SMF) using a wavelength of 1310nm via duplex LC connectors.Hot pluggable QSFP+ form factorSupports 41.3 Gb/s aggregate bit ratesPower dissipation < 3.5W18.5 dB link insertion loss budgetRoHS 6 compliantCommercial case temperature range 0°C to 70°CSingle 3.3V power supplyMaximum link length of 40km over SMFUncooled 4x10Gb/s CWDM transmitter and APD ReceiverXLPPI electrical interfaceDuplex LC receptac..