The JBX01094 400GBASE-ER8 QSFP-DD Transceiver represents a cutting-edge solution for organizations deploying next-generation high-speed optical networks. This transceiver delivers exceptional performance, enabling 400GB data transmission over extended distances while maintaining signal integrity and reliability. **Technical Specifications:** Designed to IEEE 802.3bs, QSFP-DD MSA, and CMIS standards, this transceiver provides 400GB data rates with Extended Range (ER8) capability covering up to 40km over standard singlemode fiber (9/125 micron core). The Duplex LC/UPC connectors ensure secure, low-loss connections suitable for professional network installations. **Key Features:** - 400GBASE-ER8 extended-range transmission - Full Cisco QDD-400G-ER8-S compatibility - Duplex LC/UPC fiber connectors for duplex operation - Operating temperature range: 0°C to 70°C (32-158°F) - RoHS and ELV compliant - Class 1 Laser certification with multiple safety standards - Compact form factor (5" x 4" x 2") fits standard equipment racks **Applications:** Ideal for data centers, enterprise networks, service providers, and telecommunications infrastructure requiring high-capacity, long-distance connectivity. Perfect for campus backbone networks, metropolitan area network (MAN) deployments, and inter-data-center communications. **Quality Assurance:** Manufactured in Vietnam and China with rigorous quality control, this transceiver carries multiple safety certifications including TUV, UL, and FDA 21CFR 1040.10 compliance. Custom brand programming is available for OEM and reseller requirements. **Ordering & Support:** Enjoy free standard shipping on orders exceeding $99, with shipments available from Danville, CA or Beaufort, SC locations. Includes 90-day limited warranty coverage. Replaces OEM part number QDD-400G-ER8-S.