The 7m ST/APC to ST/UPC Duplex 9/125 Singlemode Fiber Patch Cable is engineered for organizations demanding uncompromising optical performance and regulatory compliance. This professional-grade interconnect solution combines superior engineering with practical design considerations, making it the preferred choice for critical network infrastructure deployments. **Technical Excellence** Built with G.657.A1 singlemode glass fiber, this cable delivers consistent performance across telecommunications wavelengths. Attenuation specifications of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm ensure minimal signal degradation over the 7-meter span. The measured insertion loss (≤0.35dB typical) and return loss (≥20dB) exceed industry standards, certified according to ANSI/TIA/EIA-455-171-A-2001. **Connectivity & Configuration** The ST/APC to ST/UPC connector configuration implements Type A to B crossover polarity, the most common duplex patch cord standard. This polarity arrangement eliminates confusion during installation while ensuring proper signal flow. The duplex design accommodates bidirectional transmission, essential for full-duplex network communications. **Compliance & Safety** TAA-compliant certification ensures suitability for government and enterprise procurement requirements. RoHS and ELV directive compliance (EU 2002/95/EC) confirms environmental responsibility. OFNR-rated jacketing provides fire safety protection suitable for riser installations between building floors, while the 1.8mm outer diameter enables efficient cable routing through conduits and panels. **Practical Advantages** The distinctive yellow jacket simplifies installation identification and maintenance—critical in complex patch panel environments. Standard 7-meter length suits most equipment interconnections, with custom lengths available for specialized applications. Backed by a 90-day limited warranty, this cable includes free standard shipping on orders exceeding $99. **Ideal Applications** Perfect for telecommunications closets, data center interconnections, fiber-to-the-desk implementations, and FTTH (Fiber-to-the-Home) networks. Particularly suited for environments where compliance documentation and performance certification are mandatory requirements. **Investment Protection** Singlemode architecture future-proofs your network investment, supporting modern high-speed protocols and long-distance transmission requirements. This cable represents a cost-effective foundation for enterprise-class optical networks designed to perform reliably for decades.