Cisco - QSFP28 transceiver module - 100GbE - 100GBase-FR - LC single-mode - up to 2 km - 1310 nm - for P/N: 8804-SYS, A99-4HG-FLEX-SE=, A99-4HG-FLEX-TR=, NCS-57B1-5D24H-SE, NCS-57B1-6D24-SYS