The JBX01111 400GBASE-XDR4 QSFP-DD Transceiver represents the cutting edge of optical networking technology, delivering exceptional performance for next-generation data center and enterprise network infrastructure. This transceiver module is purpose-built to meet the demanding requirements of modern high-speed networking environments requiring maximum bandwidth and reliability. Technical Specifications: This module operates at 400GB/s, utilizing the QSFP-DD (Quad Small Form-factor Pluggable Double Density) form factor—the industry standard for 400G interconnects. The XDR4 configuration supports single-mode fiber transmission with a 2km reach, making it perfectly suited for inter-rack connections within data centers or campus-wide network deployments. The 9/125μm single-mode fiber core ensures low-latency, long-distance transmission without signal degradation. Connectivity and Compatibility: Featuring MTP/MPO-12/APC connectors, this transceiver ensures secure, reliable connections with industry-standard fiber infrastructure. Full Cisco QDD-4X100G-FR-S compatibility guarantees seamless integration into existing Cisco switching environments, providing a cost-effective upgrade path without requiring infrastructure changes. Safety and Compliance: Manufactured with premium materials including a metal case and integrated laser transmitter, this module meets rigorous safety standards. Class 1 laser certification, combined with TUV, UL, and FDA approvals (21CFR 1040.10), ensures safe operation in professional environments. Full RoHS and ELV compliance reflects commitment to environmental responsibility without compromising performance. Operational Reliability: Designed for continuous operation across 0-70°C temperature ranges, this transceiver maintains consistent performance in diverse deployment environments. The robust industrial-grade construction, combined with a 90-day limited warranty, provides peace of mind for mission-critical applications. Customization and Support: Custom brand programming is available for organizations requiring OEM labeling or specific firmware configurations. With domestic and international shipping from Danville, CA and Beaufort, SC, plus free standard shipping on orders exceeding $99, procurement is simplified. Applications: Ideal for data center networking, enterprise backbone connectivity, campus network deployments, and high-speed interconnects requiring 400G performance over distances up to 2km. This transceiver excels in environments where maximum throughput and reliability are non-negotiable requirements.