It primarily enables high-bandwidth 40G optical links over 12-fiber parallel fiber terminated with MPO/MTP connectors and can also be used in a 4x10G module for interoperability with 40GBASE-LR4 interfaces.
They can reach the maximum Physical rate of 500Mbps and build Layer-2 Ethernet transmit network through cable television coaxial cable and mean while have no influence on the pre-existing CATV signal transmit.