The JBX01791 10GBASE-ER SFP+ Transceiver represents premium optical transmission technology designed for mission-critical network infrastructure. This extended-range module delivers exceptional performance for organizations requiring dependable 10GB connectivity across substantial distances. **Key Technical Specifications:** Operating at 1550nm wavelength, this transceiver achieves 40km transmission distances over single-mode fiber—enabling efficient long-haul connectivity without repeaters. The 10GB data rate meets modern network demands, while IEEE 802.3ae compliance ensures standardized performance and interoperability. The duplex LC/UPC connector provides secure, low-loss connections ideal for professional installations. **Compatibility & Integration:** Direct Cisco SFP-10G-ER-S compatibility makes deployment straightforward in existing Cisco-based networks. The SFP+ form factor fits standard transceiver slots, enabling quick upgrades without infrastructure modifications. Custom brand programming capability allows integration with proprietary network management systems. **Reliability & Safety:** Constructed with a metal case housing and precision laser transmitter, this module withstands demanding environments. Operating temperature range of 0°C to 70°C accommodates diverse deployment scenarios. RoHS/ELV compliance and Class 1 laser certification guarantee environmental responsibility and user safety. TUV, UL, and FDA certifications validate manufacturing quality and regulatory adherence. **Ideal Applications:** - Data center interconnects requiring extended-range links - Campus network backbone connections - Telecommunications infrastructure upgrades - Enterprise WAN connectivity solutions - Financial institution networks requiring redundancy **Value Proposition:** With free standard shipping on orders exceeding $99 and a 90-day limited warranty, this transceiver delivers exceptional value. Ships from multiple U.S. locations ensuring fast delivery. The combination of proven compatibility, regulatory compliance, and performance reliability makes it a smart investment for network infrastructure planning.