The JBX88259 is a professional 7-meter ST/ST duplex singlemode fiber optic patch cable engineered for mission-critical network infrastructure applications. Built with precision-manufactured 9/125 singlemode fiber, this cable delivers exceptional optical performance with minimal signal loss across standard telecommunications wavelengths. **Technical Excellence:** This cable achieves outstanding insertion loss specifications of ≤0.35dB (typical 0.15dB) and maintains return loss of ≥20dB, ensuring signal integrity for long-distance telecommunications and data center connectivity. The attenuation ratings of 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm comply with ANSI/TIA/EIA-455-171-A testing standards, providing verified performance metrics. **Compliance & Safety:** TAA compliant construction ensures this cable meets U.S. government procurement requirements, making it suitable for federal projects and regulated environments. Full RoHS and ELV directive compliance (EU 2002/95/EC) confirms environmentally responsible manufacturing without hazardous substances. The riser-rated OFNR jacketing meets building fire safety codes, with a compact 1.8mm outside diameter for easy installation in tight spaces. **Design Features:** The duplex configuration provides two independent fiber strands in a single cable jacket, ideal for bidirectional communication systems. ST/UPC connectors feature Type A to B crossover polarity, the most common configuration for duplex patch cord applications. The blue jacket provides easy identification in complex network installations. **Practical Applications:** Perfect for data centers, telecommunications networks, enterprise LANs, and backbone infrastructure where reliable, high-speed fiber connectivity is essential. The 7-meter length offers flexibility for medium-distance runs between equipment. **Shipping & Support:** Qualifies for free standard shipping on orders over $99. Ships from multiple U.S. locations (California, Texas, South Carolina). Custom lengths are available for specialized applications. Backed by a 90-day limited warranty ensuring your investment is protected.