The ProXtend compatible GLC-BX80-D-I SFP transceiver provides a maximum 1.25Gb/s throughput up to 80km over single-mode fiber (SMF), using a wavelength of 1550Tx/1490Rx via an LC connector. The transceiver has been preprogramed, data traffic and application tested, guaranteeing that it is 100% compatible and will perform the same as the original Cisco equivalent.