The JBX88392 55-meter ST/ST duplex singlemode fiber patch cable represents professional-grade connectivity for mission-critical network environments. This cable is engineered to meet the exacting demands of modern telecommunications infrastructure, delivering reliable, high-speed signal transmission over extended distances. **Technical Specifications:** Features a 9/125 micron singlemode core with G.657.A1 glass fiber construction, ensuring optimal light transmission and minimal signal degradation. The cable demonstrates exceptional performance metrics: insertion loss of ≤0.35dB (0.15dB typical), return loss ≥20dB, and attenuation rates of 0.25 dB/km at 1310nm or 0.35 dB/km at 1550nm. These specifications comply with ANSI/TIA/EIA-455-171-A-2001 standards. **Compliance & Safety:** TAA (Trade Agreements Act) compliant for government and institutional procurement. RoHS/ELV certified and manufactured according to EU directive 2002/95/EC. OFNR (Optical Fiber Nonconductive Riser) rating permits safe vertical installation in building risers and plenum spaces. **Design & Connectivity:** The distinctive purple OFNR-rated jacket provides superior durability and easy cable identification in complex installations. Duplex configuration with ST/UPC connectors and Type A to B crossover polarity accommodates standard network requirements. Compact 1.8mm outside diameter enables flexible routing through tight spaces and conduits. **Applications:** Ideal for enterprise data centers, telecommunications networks, educational institutions, government facilities, and high-performance computing environments. Suitable for both backbone and horizontal cabling runs requiring extended distances. **Customization & Support:** Custom lengths available to meet specific installation requirements. Backed by a 90-day limited warranty. Ships from multiple US locations with free standard shipping on orders exceeding $99. Compatible with industry-standard ST connector panels and equipment. Invest in reliable fiber connectivity with the JBX88392—where performance, compliance, and durability converge for professional-grade network infrastructure.