QSFP+ Transceivers QSFP-40G-85-100M-MPO | 40Gb/s QSFP+ SR4 Transceiver with DDM QSFP-40G-13-2K-D | 40Gb/s QSFP+ 2km Transceiver QSFP-40G-13-10K-D | 40Gb/s QSFP+ LR4 Transceiver QSFP-40G-13-40K-D | 40Gb/s QSFP+ ER4 Transceiver