The JBX01123 400GBASE-PLR4 QSFP-DD Transceiver represents cutting-edge optical networking technology designed specifically for modern data center environments requiring ultra-high-speed, long-distance connectivity. This transceiver module combines exceptional performance with proven Arista compatibility, making it an excellent choice for organizations standardizing on Arista network infrastructure. Technical Specifications & Performance: This transceiver operates at an impressive 400 gigabit data rate using 1310nm wavelength technology, enabling transmission over singlemode fiber (9/125 core) at distances up to 10km. This extended reach capability makes it particularly valuable for connecting distributed data centers, campus facilities, or metropolitan networks where traditional short-reach transceivers are insufficient. Connectivity & Compatibility: The MTP/MPO-12/APC connector interface ensures high-density fiber connectivity while maintaining superior optical characteristics. The module is fully qualified for Arista QDD-400G-PLR4 replacement, allowing seamless integration into existing Arista-based deployments without compatibility concerns. It adheres to IEEE 802.3bs specifications and QSFP-DD MSA standards, ensuring interoperability across compliant platforms. Quality & Compliance: Manufactured with rigorous quality standards in Vietnam and China, this transceiver features a durable metal case with integrated laser transmitter technology. It maintains full RoHS and ELV directive compliance, meeting stringent environmental regulations. Safety certifications include Class 1 Laser designation, TUV, UL, and FDA certifications (21CFR 1040.10), ensuring safe operation in professional environments. Operational Reliability: With an operating temperature range of 0-70°C (32-158°F), this transceiver performs reliably in diverse data center conditions. The 90-day limited warranty provides confidence in product quality, while custom brand programming options allow integration with proprietary network management systems. Shipping & Support: Enjoy free standard shipping on orders exceeding $99, with fulfillment available from Danville, CA or Beaufort, SC locations. This product is classified under harmonization code 8544.70.0000 and is designated as an optical transceiver for low-voltage network signal transmission. Ideal Applications: Perfect for enterprise data centers, telecommunications infrastructure, cloud service providers, and organizations requiring reliable 400G long-reach connectivity over singlemode fiber networks.