The JBX02120 1000BASE-BX10-U SFP transceiver represents a reliable solution for organizations seeking affordable, long-distance gigabit connectivity. This optical module is fully compatible with Arista switching platforms, making it an excellent alternative to OEM part SFP-1G-BXU-35. **Key Technical Features:** This transceiver operates at 1Gbps using 1310/1550nm wavelengths over single-mode fiber (SMF), achieving transmission distances up to 10 kilometers. The simplex LC/UPC connector configuration simplifies fiber management while reducing space requirements on patch panels. With a 9/125µm fiber core, the module meets stringent IEEE 802.3ah standards for superior signal fidelity and minimal signal loss. **Quality & Compliance:** Manufactured to the highest standards, the JBX02120 features a protective metal case housing a Class 1 laser transmitter. It carries comprehensive safety certifications including UL/FDA 21CFR 1040.10, TUV, and RoHS/ELV compliance. These certifications ensure safe operation in professional network environments while meeting environmental regulations across global markets. **Performance & Reliability:** Operating reliably across 0-70°C temperature ranges, this module performs consistently in data centers, network closets, and outdoor installations. The robust engineering minimizes downtime while supporting mission-critical applications. A 90-day limited warranty provides peace-of-mind protection. **Cost-Effective Solution:** Compared to OEM transceivers, the JBX02120 delivers equivalent performance at significantly lower cost, making network upgrades and expansions more budget-friendly. Custom brand programming options allow seamless integration into existing inventory systems. **Shipping & Support:** Enjoy free standard shipping on orders exceeding $99, with fulfillment from strategically located distribution centers in Danville, CA and Beaufort, SC, ensuring rapid delivery nationwide.