Qsfp-40g-Lr4 Duplex LC 40gbase-Lr4 1310nm 10km 40g Qsfp+ Lr4, Find Details and Price about Optical Transceiver Qsfp-40g-Sr4 from Qsfp-40g-Lr4 Duplex LC 40gbase-Lr4 1310nm 10km 40g Qsfp+ Lr4 - Shenzhen Lanmexx Technologies Co., Ltd.