The JBX01212 40GBASE-LM4 QSFP+ optical transceiver module represents enterprise-grade networking performance designed for demanding data center environments. This compact, form-factor compliant module delivers 40Gbps data throughput with exceptional reliability over multimode fiber infrastructure. **Technical Specifications & Performance:** Operating at 40GB data rates per IEEE 802.3ba standards, this transceiver achieves transmission distances of 150 meters over OM4 multimode fiber, with OM3 backward compatibility for flexible network deployments. The duplex LC/UPC fiber connector configuration ensures reliable signal transmission with minimal insertion loss and return loss. **Key Features & Benefits:** - Brocade 40G-QSFP-LM4 direct compatibility for seamless system integration - Compact QSFP+ form factor for high-density port configurations - Durable metal case construction with integrated laser transmitter - Operating temperature range: 0-70°C for varied environment deployment - 150-meter reach enables flexibility in data center cabling layouts - Qualified to SFF-8436 and IEEE 802.3ba specifications **Compliance & Safety:** This transceiver module fully complies with EU RoHS Directive 2002/95/EC and carries international safety certifications including Class 1 Laser, TÜV, UL/FDA (21CFR 1040.10) compliance, ensuring safe operation in enterprise environments. **Applications & Use Cases:** Ideal for high-speed data center interconnections, enterprise switch upgrades, and mission-critical network infrastructure requiring reliable 40Gbps connectivity over multimode fiber. Particularly suited for organizations leveraging Brocade switching architectures. **Warranty & Support:** Backed by a 90-day limited warranty with free standard shipping on orders over $99. Custom brand programming available for OEM and reseller requirements.