The JBX42513 ST/APC to ST/APC duplex singlemode fiber patch cable represents professional-grade connectivity for modern fiber optic networks. This 2-meter cable is engineered to meet stringent telecommunications standards and delivers reliable, high-speed data transmission for mission-critical applications. **Technical Specifications:** Constructed with 9/125 singlemode fiber using G.657.A1 glass composition, this cable supports both 1310nm and 1550nm wavelengths with minimal attenuation. The duplex configuration features two fiber strands in a single jacket, enabling simultaneous bidirectional communication. With typical insertion loss of 0.15dB and return loss exceeding 20dB, performance exceeds industry expectations for singlemode connectivity. **Design & Build Quality:** The yellow outer jacket provides superior visibility during installation and maintenance, reducing the risk of accidental disconnection. The OFNR (Optical Fiber Non-Conductive Riser) rating ensures compliance with building codes and safety standards. The 1.8mm outer diameter allows for efficient cable management in tight spaces without compromising durability. Type A to B crossover polarity represents the industry standard for duplex patch cords. **Compliance & Certification:** Fully TAA (Trade Agreements Act) compliant for federal government procurement. RoHS and ELV directive compliance ensures environmental responsibility. Testing performed to ANSI/TIA/EIA-455-171-A standards guarantees performance reliability. **Applications:** • Data center interconnections • Telecommunications infrastructure • Network backbone installations • Fiber optic system testing and maintenance • Long-distance signal transmission **Customization & Support:** Custom cable lengths are available to match specific installation requirements. The 90-day limited warranty provides protection against manufacturing defects. Free standard shipping on orders exceeding $99, with fulfillment available from multiple U.S. locations for rapid delivery. **Care & Maintenance:** Protect connectors from dust and contamination using appropriate dust caps when not in use. Avoid bending cables beyond the recommended bend radius to maintain signal integrity. Store in a cool, dry environment away from direct sunlight.