The JBX01377 100GBASE-BX40 QSFP28 transceiver represents cutting-edge optical networking technology designed for demanding enterprise and service provider environments. This module delivers exceptional 100Gigabit per second performance over extended distances, specifically engineered for 40-kilometer transmission through single-mode fiber infrastructure. **Key Technical Features:** Built on IEEE 802.3bm specifications and QSFP28 MSA standards, this transceiver utilizes a 9/125 micrometer singlemode fiber core for optimal signal integrity. The simplex LC/UPC fiber connector provides precise alignment and minimal signal loss, while the metal case construction ensures durability and reliable heat dissipation. Operating across a wide temperature range of 0 to 70°C (32 to 158°F), the module maintains consistent performance in varied environmental conditions. **Compatibility and Integration:** Fully compatible with Cisco QSFP-100G-BX40U-S equipment, this module drops seamlessly into existing network infrastructure without requiring firmware updates or reconfiguration. The standardized QSFP28 form factor ensures compatibility with current and future networking equipment that adheres to industry specifications. **Compliance and Safety:** RoHS and ELV directive compliant, this transceiver meets stringent international environmental and safety standards. Class 1 laser certification, UL/FDA compliance (21CFR 1040.10), and TUV certification demonstrate our commitment to safety and quality. The module carries proper laser safety designations and undergoes rigorous testing before shipment. **Ideal Applications:** - Inter-data center connectivity - Metropolitan area networks (MAN) - Long-distance enterprise networks - Service provider backbone infrastructure - Campus network extensions - Disaster recovery and business continuity links **Additional Benefits:** Custom brand programming is available for organization-specific requirements. Ships from conveniently located facilities in California and South Carolina with free standard shipping on qualifying orders. The 90-day limited warranty provides peace of mind and protection for your investment in network infrastructure. **Dimensions and Specifications:** Compact 5x4x2 inch form factor maximizes rack space efficiency. The transceiver integrates advanced laser transmitter technology within a robust metal chassis, delivering reliable 100GB performance for years of dependable service.