The JBX01417 100GBASE-ER4 QSFP28 Transceiver represents cutting-edge optical networking technology designed for mission-critical enterprise environments. As a Juniper QSFP-100G-4WDM40 compatible solution, this transceiver seamlessly integrates into existing Juniper network infrastructures while supporting broader ecosystem compatibility. **Key Technical Specifications:** This optical transceiver operates at 100 gigabits per second over singlemode fiber with a 9/125 micron core diameter. The extended reach capability of 40 kilometers over standard SMF makes it ideal for metropolitan area networks, campus interconnections, and data center clustering applications. The 100GBASE-ER4 standard utilizes four wavelength-division multiplexed channels, providing efficient bandwidth utilization over duplex fiber strands. **Physical Design & Reliability:** The compact QSFP28 form factor (5x4x2 inch dimensions) fits standard network switch configurations. The metal case construction with integrated laser transmitter technology ensures durability and thermal stability. Operating temperature range of 0°C to 70°C accommodates diverse deployment environments from climate-controlled data centers to outdoor network cabinets. **Compliance & Safety:** This module exceeds industry safety standards with Class 1 Laser certification, TUV validation, and FDA compliance (21CFR 1040.10). Full RoHS/ELV directive compliance (EU 2002/95/EC) ensures environmental responsibility. The module qualifies to IEEE 802.3bm and QSFP28 MSA standards, guaranteeing interoperability and performance consistency. **Connectivity & Integration:** The duplex LC/UPC fiber connectors provide low-loss, secure connections with minimal return loss. Custom brand programming capabilities enable organizations to standardize transceiver identification across heterogeneous network environments. Free standard shipping on orders over $99 and 90-day limited warranty provide cost-effective procurement with peace of mind. **Ideal Applications:** Perfect for service providers, enterprise data centers, carrier networks, and educational institutions requiring high-speed, long-distance fiber connectivity without regeneration equipment investment. The JBX01417 delivers enterprise-grade performance at competitive pricing.