The QSFP + SR4 module and the QSFP + SR4 module can be used in the 40G port directly connected environment, but also can be used in one end Is 40Gbps QSFP + interface, the other end is four 10GbpsSFP + interface, the middle through the 12-core MPO high-density fiber optic cable connection environment. QSFP + LR4 module uses four CWDM channels MUX / DEMUX design, single-channel rate of 11.2Gbps, four-channel support 44.8Gb / s transmission rate, four channels of the central wavelength of 1271nm, 1291nm, 1311nm, 1331nm, the module can be used in addition to In the 40G port directly connected environment, you can also use wavelength division multiplexing equipment, the use of 40G QSFP + module and four 10G CWDM optical module connected to the application environment.