The JBX01117 400ZR+ QSFP-DD Coherent Optical Transceiver represents cutting-edge technology for next-generation network infrastructure. Designed to meet the demanding requirements of modern data centers and service provider networks, this module enables 400GB Ethernet transmission over ultra-long distances without requiring expensive regeneration equipment. **Technical Specifications & Performance:** This coherent transceiver module achieves exceptional 400GB data rates with coherent signaling technology, enabling transmission distances up to 120km over standard single-mode fiber (SMF). The 9/125 fiber core specification ensures compatibility with existing backbone infrastructure while delivering superior signal quality. Operating across a wide temperature range of 0-70°C (32-158°F), the module maintains consistent performance in diverse deployment environments. **Connectivity & Compatibility:** The Duplex LC/UPC fiber connectors provide reliable, low-loss connections essential for maintaining signal integrity over extended distances. Full compatibility with Cisco QDD-400G-ZRP-S specifications ensures seamless integration into Cisco network environments. Compliance with IEEE 802.3bs, QSFP-DD Multi-Source Agreement (MSA), and CMIS standards guarantees interoperability with industry-standard equipment. **Quality & Safety Compliance:** Manufactured to the highest standards with metal case construction and integrated laser transmitter technology, this transceiver meets comprehensive safety certifications including Class 1 Laser designation, UL/FDA approval (21CFR 1040.10), and TUV certification. Full RoHS/ELV directive compliance (EU 2002/95/EC) ensures environmental responsibility. **Ideal Applications:** Perfect for metropolitan area networks (MANs), regional interconnects, long-haul data center replication, and service provider backbone networks. Eliminates the need for costly regeneration equipment while maintaining exceptional signal quality across extended distances. **Warranty & Support:** Backed by a 90-day limited warranty and available custom brand programming for seamless integration into existing infrastructure. Ships from convenient US locations (Danville, CA and Beaufort, SC) with free standard shipping on orders over $99.