The JBX01448 100GBASE-LR4 QSFP28 Transceiver represents the pinnacle of high-speed optical networking technology, delivering 100 gigabits per second performance over extended distances. This advanced transceiver module is engineered to meet the demanding requirements of modern enterprise data centers, campus networks, and service provider infrastructure. **Key Performance Features:** Operating at 100GBASE-LR4 speeds, this QSFP28 module transmits data up to 10 kilometers over standard single-mode fiber (9/125μm core), making it suitable for medium-distance network deployments. The duplex LC/UPC fiber connectors provide optimal optical coupling with minimal back-reflection and signal degradation. Qualified to IEEE 802.3bm specifications and QSFP28 MSA standards, this transceiver ensures compliance with industry requirements. **Technical Excellence:** Constructed with a durable metal case housing and precision laser transmitter technology, the module maintains consistent performance across operating temperatures ranging from -40°C to 85°C (-40°F to 185°F). The compact 5x4x2 inch form factor fits seamlessly into rack-mounted networking equipment without requiring additional space or modifications. **Compatibility and Integration:** Designed as a drop-in replacement for Cisco QSFP-100G-LR4-I modules, this transceiver integrates immediately into Cisco-based network infrastructure without configuration changes. Custom brand programming is available for OEM applications and white-label deployments. **Compliance and Certifications:** Fully RoHS and ELV compliant, meeting EU Directive 2002/95/EC requirements. Multiple safety certifications including Class 1 Laser classification, TUV, UL, and FDA approvals ensure safe operation in all environments. Manufactured in Vietnam and China to exacting quality standards. **Value and Support:** Backed by a 90-day limited warranty, this transceiver provides reliable networking performance. Free standard shipping on orders over $99 with convenient fulfillment from Danville, CA and Beaufort, SC locations. Ideal for IT professionals, network engineers, and data center operators seeking high-performance optical connectivity solutions.