The JBX01223 40GBASE-LR4 QSFP+ optical transceiver represents cutting-edge connectivity technology for modern data centers and enterprise networks. As a direct replacement for the Brocade 40G-QSFP-LR4, this module provides seamless compatibility while delivering enterprise-grade performance at competitive pricing. **Specifications & Performance:** Operating at 40 gigabits per second, this transceiver leverages IEEE 802.3ba standards to transmit data reliably over distances up to 10 kilometers. The LR4 (Long-Reach, 4-lane) configuration utilizes advanced wavelength division multiplexing technology, enabling efficient use of single-mode fiber infrastructure. The 9/125µm fiber core specification ensures optimal signal propagation and minimal attenuation across extended distances. **Physical Design & Reliability:** Feature-rich construction includes a durable metal case housing an integrated laser transmitter assembly. The compact 5x4x2 inch form factor fits standard QSFP+ module slots without requiring adapter frames. Duplex LC/UPC connectors provide secure, low-insertion-loss connections with industry-standard polished fiber ends that reduce back-reflection and signal degradation. **Compliance & Safety:** This module exceeds enterprise safety requirements with Class 1 Laser certification, TUV approval, UL/FDA compliance (21CFR 1040.10), and full RoHS/ELV directive adherence. The extensive certification portfolio ensures deployment in regulated environments and mission-critical applications. **Applications & Use Cases:** - Data center interconnection between buildings - Metropolitan area network (MAN) deployments - Campus network backbone connectivity - High-speed storage area network (SAN) expansion - Financial services and enterprise trading infrastructure **Operational Excellence:** The wide operating temperature range (0-70°C/32-158°F) accommodates diverse deployment scenarios, from climate-controlled data centers to network closets with variable conditions. The 90-day limited warranty provides peace of mind, while custom brand programming availability supports enterprise asset management requirements. **Compatibility & Integration:** As a qualified Brocade replacement, this transceiver integrates directly into existing Brocade switches and fabric equipment without requiring firmware updates or configuration changes. Network administrators benefit from plug-and-play installation that minimizes downtime during infrastructure upgrades. Invest in reliable, standards-compliant connectivity with the JBX01223, backed by comprehensive international certifications and proven compatibility with leading networking platforms.