The JBX01340 100GBASE-SR4 QSFP28 transceiver represents the cutting edge of optical networking technology, specifically designed for organizations requiring high-bandwidth, short-to-medium distance connectivity within data centers and enterprise campus networks. This module delivers 100 gigabits per second of throughput using 850-nanometer laser wavelength technology, optimized for multimode fiber transmission. **Technical Specifications & Performance:** This transceiver operates over OM4 multimode fiber at distances up to 100 meters, making it perfect for connecting switches, routers, and servers within the same data center facility or nearby buildings. The SR4 designation indicates simultaneous use of four parallel lanes at 25Gbps each, totaling 100Gbps throughput. The form factor is QSFP28 (Quad Small Form-factor Pluggable 28), measuring 5.0" x 4.0" x 2.0", enabling high-density port configurations on network equipment. **Connectivity & Compatibility:** Equipped with MTP/MPO-12/UPC connectors, the JBX01340 seamlessly integrates with Juniper Networks infrastructure, specifically replacing the QSFP-100G-SR4-ET module. This direct compatibility eliminates integration challenges and ensures plug-and-play installation. The module is qualified to IEEE 802.3bm specifications and complies with QSFP28 MSA and SFF-8665 standards, guaranteeing interoperability with certified network equipment from leading manufacturers. **Reliability & Safety:** Certified as Class 1 laser equipment under LN #50 7/2001 and FDA 21CFR 1040.10 standards, this transceiver meets the highest safety requirements for optical equipment. Additional certifications include TUV and UL approval, ensuring compliance with international safety standards. The robust metal case with integrated laser transmitter protects sensitive optics while maintaining optimal thermal management across the -10 to 85°C operating temperature range. **Environmental Compliance:** This module adheres to RoHS (Restriction of Hazardous Substances) and ELV (End of Life Vehicles) Directives, meeting EU 2002/95/EC requirements. Manufactured in Vietnam and China with rigorous quality control, each unit undergoes stringent testing before shipment. **Application Use Cases:** Ideal for data center backbone interconnections, high-speed storage networks, cloud computing infrastructure, and enterprise campus networks requiring reliable 100Gbps connectivity. Perfect for organizations migrating from lower-speed 40G or 50G infrastructure to next-generation 100G environments. **Value & Support:** Available with custom brand programming for OEM applications, free standard shipping on orders exceeding $99, and backed by a 90-day limited warranty. Shipped from convenient U.S. locations (Danville, CA and Beaufort, SC) for expedited delivery. This investment in modern optical infrastructure positions networks for scalability and future growth.