The JBX02178 1000BASE-BX40-D SFP transceiver represents a cost-effective solution for organizations requiring extended-reach optical connectivity without sacrificing quality or reliability. Qualified to SFF-8472 specifications with extended-reach BiDi capabilities beyond standard IEEE 802.3ah requirements, this module provides the performance characteristics needed for modern network infrastructure. **Key Technical Specifications:** - Form Factor: SFP (Small Form-factor Pluggable) - Data Rate: 1 Gigabit per second (1000BASE-BX40-D) - Transmission Distance: 40 kilometers over single-mode fiber - Fiber Type: 9/125 singlemode with extended reach - Connector Type: Simplex LC/UPC (one fiber strand) - Operating Wavelengths: 1550nm transmit / 1310nm receive (or vice versa) - Operating Temperature Range: 0°C to 70°C (32°F to 158°F) **Safety & Compliance:** Fully certified as a Class 1 laser product (FDA 21CFR 1040.10, TUV, UL approved), this transceiver meets stringent international safety standards. RoHS and ELV directive compliance ensures environmentally responsible manufacturing and disposal, while harmonization code 8544.70.0000 facilitates global trade compliance. **Perfect For:** - Long-distance campus network interconnects - Carrier-grade metropolitan area networks (MANs) - Data center backbone connections - Service provider deployments - Organizations standardized on Arista equipment **Compatibility & Installation:** As a direct drop-in replacement for Arista SFP-1G-BXD40-53 modules, the JBX02178 requires no firmware updates or configuration changes. Simply insert into any compatible SFP port and configure network settings as needed. Custom brand programming is available for OEM deployments. **Warranty & Support:** Backed by a 90-day limited warranty, this module arrives ready for deployment with free standard shipping on orders exceeding $99. Ships from dual US locations (Danville, CA and Beaufort, SC) for rapid delivery.