The JBX01479 is a cutting-edge 100GBASE-PLR4 QSFP28 optical transceiver designed to meet the demanding requirements of modern high-speed networking environments. This module delivers exceptional performance for organizations upgrading their infrastructure to support 100GB Ethernet connectivity. **Key Technical Specifications:** This transceiver operates at 100GB data rates using 1310nm wavelength technology, enabling 10-kilometer transmission distances over singlemode fiber. The 9/125 fiber core ensures optimal signal integrity and minimal signal degradation. With QSFP28 form factor and MTP/MPO connectors, it provides flexible deployment options for multi-fiber configurations. **Compatibility and Integration:** Fully compatible with Cisco equipment, specifically replacing the Cisco QSFP-100G-PLR4-S module, making it an excellent cost-effective alternative for network upgrades and replacements. The module adheres to IEEE 802.3bm and QSFP28 MSA standards, ensuring interoperability across compliant systems. **Build Quality and Safety:** Constructed with a durable metal case and integrated laser transmitter, this module withstands the rigors of 24/7 operation. It carries multiple safety certifications including Class 1 Laser, TÜV, UL, and FDA 21CFR 1040.10 compliance, plus RoHS/ELV directive adherence, guaranteeing environmental responsibility and user safety. **Operational Reliability:** With an operating temperature range of 0-70°C (32-158°F), the transceiver performs reliably in diverse data center and network environments. Custom brand programming is available for OEM applications, and a 90-day limited warranty provides peace of mind. **Shipping and Support:** Quick shipping from multiple U.S. locations (Danville, CA and Beaufort, SC) with free standard shipping on orders exceeding $99. Manufactured in Vietnam and China with stringent quality controls, this module represents excellent value for enterprise and data center networking needs.