The 40GBase-LR4 QSFP+ transceiver is designed to meet the requirements of 40G ethernet links over SMF up to10km. it is compliant with QSFP+ MSA, EEE 802.3ba 40GBase-LR4. lt is cost-effective, low power consumptionwith a single 3.3V power supply. it is fabricated with all-metal and compact size housing for superior EMl performance.