The JBX01427 100GBASE-ER4-Lite QSFP28 transceiver represents cutting-edge optical networking technology designed for modern enterprise infrastructure. This module is engineered to deliver 100 gigabits per second data rates over extended distances, specifically supporting 40-kilometer transmission through single-mode fiber (SMF) with 9/125 core specifications. Key Technical Specifications: This QSFP28 form factor transceiver features duplex LC/UPC fiber connectors, providing a compact and industry-standard interface for high-density deployments. The module integrates both laser transmitter and receiver components within its precision-engineered metal case, measuring 5x4x2 inches. Operating across a temperature range of 0 to 70°C (32 to 158°F), it maintains performance stability in diverse deployment environments. NVIDIA Mellanox Compatibility: Direct compatibility with NVIDIA Mellanox infrastructure (replacing OEM P/N 980-9I53X-00C000 and SPQ-CE-ER-CDFL-M) ensures seamless integration into existing network architectures. This compatibility eliminates configuration complexity and reduces deployment time for network administrators. Standards Compliance & Safety: Fully qualified to IEEE 802.3bm specifications and QSFP28 MSA standards, this transceiver meets rigorous industry requirements. Comprehensive safety certifications include Class 1 Laser designation, TUV, UL/FDA (21CFR 1040.10), and LN #50 7/2001 compliance. RoHS and ELV directive compliance ensures environmental responsibility. Application & Use Cases: Ideal for data center interconnects, metropolitan area networks (MANs), and telecommunications backbone applications requiring long-distance, high-bandwidth connectivity. Perfect for enterprise environments consolidating network infrastructure while maintaining performance standards. Warranty & Support: 90-day limited warranty provides customer confidence. Custom brand programming available for organizations requiring specialized configurations. Shipping & Availability: Free standard shipping on orders exceeding $99, with fulfillment from strategically located distribution centers in Danville, CA and Beaufort, SC.