| The Extreme Networks 25G-ER-SFP40KM transceiver is engineered for ultra-long-distance 25 Gigabit Ethernet deployments. It operates over single-mode fiber (SMF) and supports transmission distances up to 40 kilometers using a 1310nm EML laser and APD receiver.
Designed for carrier-grade performance, this module enables efficient aggregation across WAN links, metro access networks, and extended enterprise backbones. It features Digital Diagnostic Monitoring (DDM) for optical performance management and is compliant with IEEE 802.3by and MSA standards. With a power budget designed for long-reach applications and a commercial temperature range of 0°C to 70°C, the 25G-ER-SFP40KM ensures robust performance and consistent data delivery in critical infrastructures. Its hot-swappable design allows for easy integration and field maintenance, providing maximum flexibility for scalable network expansion. |

