The JBX92202 55-meter SC/ST duplex singlemode fiber patch cable represents a premium solution for professional networking environments requiring reliable, long-distance fiber optic connectivity. This cable bridges the gap between legacy ST-connector equipment and modern SC-connector infrastructure, making it invaluable for network upgrades and mixed-environment deployments. **Technical Excellence:** Constructed with 9/125 singlemode fiber core and G.657.A1 glass fiber, this cable meets stringent performance standards. The ≤0.35dB insertion loss (0.15dB typical) and ≥20dB return loss ensure minimal signal degradation across the full 55-meter run. Attenuation specifications of 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm provide optimal performance for both traditional and modern wavelengths used in telecommunications infrastructure. **Compliance and Safety:** Full TAA compliance makes this cable suitable for government contracts and institutional procurement policies. RoHS and ELV directive compliance (EU 2002/95/EC) ensures environmental responsibility and international market acceptance. The OFNR (Optical Fiber, Non-conductive, Riser) rating permits installation through building risers and cable trays without conduit, reducing installation costs while maintaining fire safety standards. **Practical Advantages:** The Type A to B crossover polarity configuration accommodates the most common duplex patch cord applications, eliminating compatibility confusion. The 1.8mm outer diameter provides flexibility in crowded cable management scenarios while maintaining durability. Available in custom lengths for specific deployment requirements beyond the standard 55-meter specification. **Applications:** Ideally suited for telecommunications facilities, data center backbone connections, campus network infrastructure, long-distance signal transmission between buildings, and network equipment replacement projects. Perfect for installations requiring mixed connector types or transitional network environments. **Quality Assurance:** Every cable undergoes attenuation testing per ANSI/TIA/EIA standards, backed by a 90-day limited warranty. Multiple US shipping locations (Danville CA, Fort Worth TX, Beaufort SC) ensure rapid delivery. Free standard shipping on orders exceeding $99 provides exceptional value for bulk purchases and network upgrades.