A high-performance transceiver module for 25 Gigabit Ethernet (25GbE) networks is the Cisco SFP-25G-ER-I. With a 30-kilometer range, this module is excellent at long-distance communication, making it appropriate for a variety of networking applications. The transceiver has a duplex LC connection for single-mode fiber optics and runs at a wavelength of 1310 nm.