40GBASE-ER4 QSFP+ SMF 1271-1331nm 40km DDM Transceiver 100% OEM Compatible 40GBase-ER4 QSFP+ Transceiver (SMF, 1271-1331 nm, 40 km, LC, DDM, Commercial Temp.) Specifications Form Factor: QSFP+ ER4 Data Rate: 41.2 Gb/s Wavelength: 1271 nm, 1291 nm, 1311 nm, 1331 nm Protocols: 40G Ethernet, OTU3, OTU3e1,...