SFP-50G-ER-I — SFP56 25/50 Gbps

The Cisco SFP-50G-ER-I is a duplex SFP56 transceiver supporting 25 and 50 Gbps over single-mode fiber (SMF) with an LC UPC connector, compliant with the IEEE 25GBASE-ER and 50GBASE-ER standards. Unlike the BX40U-I and BX40D-I variants that operate over a single fiber strand, this module uses two fibers (separate Tx/Rx) over a reach of 40 km, providing a conventional duplex solution for existing dual-fiber cabling infrastructure. The industrial range of -40 to 85 °C ensures use in extreme conditions.

This module targets 25G/50G long-distance networks where duplex cabling is already in place, particularly in industrial or outdoor environments. It integrates into SFP56-compatible Cisco equipment for high-bandwidth extended links. Genuine Cisco hardware, manufacturer warranty.