The JBX01222 is a premium 40GBASE-LR4 QSFP+ optical transceiver engineered for organizations requiring high-speed, long-distance network connectivity. This module excels in scenarios where extended fiber runs are necessary, supporting transmission up to 10 kilometers over single-mode fiber (SMF) with exceptional signal integrity. **Key Features & Specifications:** Designed to IEEE 802.3ba and SFF-8436 standards, this transceiver delivers 40GB data rates with minimal latency. The duplex LC/UPC fiber connectors ensure secure, low-loss connections critical for enterprise-grade deployments. With a 9/125 single-mode fiber core, it provides superior performance over longer distances compared to multi-mode alternatives. **Quality & Compliance:** Manufactured to international standards, the JBX01222 features Class 1 laser safety certification and comprehensive compliance testing including UL/FDA 21CFR 1040.10, TUV, and RoHS directives. The metal housing with integrated laser transmitter provides durability and thermal stability for continuous operation. **Operational Excellence:** Operating reliably between 0-70°C (32-158°F), this module handles varying environmental conditions while maintaining consistent performance. The compact 5x4x2 inch form factor fits standard QSFP+ slots without modifications. **Compatibility & Integration:** Fully compatible with Arista networking equipment, it serves as a direct replacement for OEM part QSFP-40G-LR4. Custom brand programming is available for organizations requiring personalized configurations. This flexibility makes it suitable for multi-vendor environments or future equipment transitions. **Applications:** Ideal for data center interconnections, campus network backbone upgrades, long-distance site-to-site connectivity, and high-speed content delivery networks. Perfect for enterprises consolidating network infrastructure while maintaining investment protection. **Shipping & Support:** Qualifies for free standard shipping on orders exceeding $99 with rapid fulfillment from strategically located warehouses in California and South Carolina. Each unit includes a 90-day limited warranty covering manufacturing defects.