The JBX01219 is a high-performance 40GBASE-LM4 QSFP+ optical transceiver designed specifically for enterprise-grade network infrastructure. This professional-quality module supports 40 gigabit per second data rates over multimode fiber (MMF) distances up to 150 meters, making it ideal for data center interconnects, high-speed switching, and enterprise campus networks. Key Technical Specifications: This transceiver operates at 40GB data rates over OM4/OM3 multimode fiber with duplex LC/UPC connectors. Its compact QSFP+ form factor measures 5x4x2 inches and integrates a metal case with embedded laser transmission technology for superior signal quality. The module supports a 9/125 singlemode fiber core and operates reliably between 0-70°C, accommodating diverse deployment environments. Compatibility and Integration: Fully compatible with NVIDIA Mellanox infrastructure, this module directly replaces the MC2210511-LX4 OEM part number. It is IEEE 802.3ba and SFF-8436 qualified, ensuring seamless integration with certified networking equipment and platforms. Compliance and Safety: The transceiver meets stringent international standards including RoHS/ELV directives and EU directive 2002/95/EC. It carries Class 1 laser certification along with TUV, UL, and FDA 21CFR 1040.10 approvals, demonstrating commitment to safety and environmental responsibility. Value Proposition: With custom brand programming available, flexible shipping from Danville, CA and Beaufort, SC locations, and free standard shipping on orders exceeding $99, this solution offers exceptional value. The 90-day limited warranty provides peace of mind, while the multimode fiber capability enables cost-effective deployment over existing infrastructure. Applications: Ideal for data center managers, network engineers, and IT professionals requiring reliable high-speed connectivity. Suitable for campus networking, equipment upgrades, and infrastructure expansion projects requiring 40GB multimode optical connectivity.