50G Ethernet QSFP28 Transceivers are designed for 50G Ethernet application using fixed 103.25 Gbps data rate, comprehending 50G SR4, BiDi SR4, LR4, ER4 Lite, ZR4 which are defined by IEEE 802.3ba/802.3bm, 2km PSM4 which is defined by 50G PAM4 BIDI and CWDM4/CLR4 modules which are defined by 50G QSFP28 SM. Additionally, there are 2 special modules: 50G QSFP28 SM Low Power module which is useful in modern data center environments and can help to save power and lower heat dissipation and there is 50G QSFP28 LR4 Long Haul (20km) module which is extended reach version of 50G LR4.