The JBX42722 ST/APC to LC/UPC 1.5-meter duplex singlemode fiber patch cable represents professional-grade optical connectivity for demanding network environments. Built to stringent telecommunications standards, this cable delivers the performance and reliability required in modern data centers, telecommunications facilities, and enterprise network infrastructure. **Technical Excellence:** This duplex singlemode cable features a 9/125 fiber core that meets G.657.A1 specifications, ensuring exceptional optical performance across telecommunications wavelengths. With insertion loss of just 0.15dB typical (≤0.35dB maximum) and return loss exceeding 20dB, the cable maintains signal integrity over extended network runs. Testing follows ANSI/TIA/EIA standards to guarantee consistent performance. **Design & Construction:** The cable combines ST/APC connectors on one end with LC/UPC connectors on the other, offering versatile connectivity between different network equipment configurations. The Type A to B crossover polarity is the industry standard for duplex patch cords, ensuring seamless integration into existing installations. At 1.8mm outer diameter, the cable fits easily through conduit, cable trays, and wall-mounted routing systems. **Compliance & Safety:** Manufactured to meet TAA (Trade Agreements Act) requirements, this cable qualifies for government and institutional procurement. RoHS and ELV directives compliance ensures environmental responsibility. The riser-rated (OFNR) PVC jacketing provides fire safety and meets building codes for indoor use without conduit in plenum spaces. **Practical Advantages:** The distinctive yellow jacket simplifies cable management and identification in multi-cable environments. Available in custom lengths for specialized installations. Ships from three US locations (Danville CA, Fort Worth TX, and Beaufort SC) ensuring rapid delivery. Includes 90-day limited warranty. **Applications:** Ideal for connecting network switches, routers, and transceivers in single-mode fiber networks. Commonly used in data center migrations, long-distance telecommunications links, and campus network installations. The 1.5-meter length provides flexibility for rack-mounted equipment spacing. **Free Shipping & Availability:** Enjoy free standard shipping on orders exceeding $99. Custom lengths available to meet specific installation requirements. Contact our sales team for volume pricing and extended warranty options.