The JBX89156 4m SC/SC Duplex Singlemode Fiber Patch Cable represents a premium connectivity solution for organizations requiring reliable, high-performance fiber optic infrastructure. This professional-grade cable is engineered to meet the stringent demands of modern telecommunications, data centers, and enterprise network environments. **Technical Excellence** Constructed with 9/125 singlemode fiber and G.657.A1 glass composition, this cable delivers exceptional signal fidelity across multiple wavelengths. The dual-strand duplex configuration supports full-duplex communication, enabling simultaneous bidirectional data transmission. Tested attenuation rates of 0.25dB/km at 1310nm and 0.35dB/km at 1550nm ensure minimal signal loss over distance, while insertion loss of ≤0.35dB (typical 0.15dB) and return loss of ≥20dB provide industry-leading performance metrics. **Design and Compliance** The distinctive purple OFNR riser-rated jacket provides dual benefits: easy visual identification within complex network installations and certified fire safety for indoor building use. SC/UPC connectors feature Type A to B crossover polarity—the most common configuration for duplex patch cords. TAA compliance ensures this cable meets Government procurement requirements, while RoHS/ELV directive adherence confirms environmental responsibility. **Practical Applications** Ideal for connecting telecommunications equipment, network switches, and optical distribution frames. The 4-meter length accommodates standard rack-to-rack connections within data centers and network closets. Custom length availability supports specialized deployment requirements. **Quality Assurance** Every cable meets ANSI/TIA/EIA-455-171-A-2001 attenuation testing standards, guaranteeing performance consistency. The 90-day limited warranty provides customer confidence, while free standard shipping on orders exceeding $99 enhances value. Ships from strategically located US facilities for expedited delivery. **Why Choose This Cable?** When network reliability matters, this TAA-compliant singlemode patch cable delivers proven performance with minimal insertion loss, industry-standard connectors, and professional-grade construction. Whether upgrading existing infrastructure or deploying new networks, this cable provides the dependable connectivity backbone your organization requires.