The FS QSFP28-LR4-100G is a high-speed transceiver designed for use with QSFP28 LR4 interfaces. It is a single-module unit with one network port, suitable for SFP connections. Tested for quality and reliability, this transceiver is ideal for use in enterprise networking and server applications. With a 10km distance capability and 1310nm wavelength, it provides fast and efficient data transmission for a variety of networking needs.