The JBX89187 5m SC/ST Duplex Singlemode Fiber Patch Cable represents professional-quality optical connectivity for demanding telecommunications and data center applications. This precision-engineered cable features a duplex configuration with SC/UPC connectors on one end and ST/UPC connectors on the other, delivering flexible connectivity options for diverse network environments. **Technical Excellence:** Built with 9/125 singlemode core specification and G.657.A1 glass fiber, this cable ensures minimal signal attenuation and maximum transmission distance. With typical insertion loss of just 0.15dB and maximum 0.35dB, superior return loss of ≥20dB, and wavelength performance at both 1310nm (0.25dB/km) and 1550nm (0.35dB/km), this cable meets the highest industry standards for network infrastructure. **Design & Durability:** The 5-meter length provides optimal reach for equipment interconnection without excessive slack. The durable 1.8mm outer diameter jacket, rated for riser applications (OFNR), ensures longevity in both indoor installations and demanding environments. TAA compliance and RoHS/ELV certification guarantee adherence to government and environmental regulations, making it ideal for federal contracts and sustainability-conscious enterprises. **Flexibility & Support:** Available in custom lengths to meet specific installation requirements. Ships from multiple US locations (Danville CA, Fort Worth TX, Beaufort SC) ensuring rapid delivery. Free standard shipping on orders over $99 makes bulk purchasing economical. **Applications:** Ideal for data centers, telecommunications facilities, enterprise networks, and any installation requiring reliable singlemode fiber connectivity. The Type A to B crossover polarity configuration is the most common duplex standard, ensuring compatibility with standard network equipment. **Quality Assurance:** Tested according to ANSI/TIA/EIA-455-171-A standards with 90-day limited warranty coverage, providing peace of mind for critical network investments.