The JBX42974 2.5m LC/UPC Singlemode Fiber Patch Cable represents enterprise-grade connectivity for fiber optic networks. This simplex cable is engineered with a 9/125 micron singlemode fiber core, delivering optimal performance for telecommunications, data centers, and long-distance network applications where signal integrity is paramount. **Performance Specifications:** This cable maintains exceptional attenuation characteristics with measurements of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm, ensuring minimal signal loss over extended distances. The insertion loss specification of ≤0.35dB with typical performance of 0.15dB provides superior signal clarity, while the return loss of ≥20dB prevents reflective interference that could degrade network performance. **Construction & Durability:** The cable features a 1.8mm outside diameter with yellow OFNR (Optical Fiber Non-conductive Riser) rated jacket, meeting stringent building codes for fire safety and performance. Manufactured with G.657.A1 glass fiber technology, this cable offers enhanced bend radius characteristics without compromising signal quality. The robust plastic accessory materials ensure longevity in demanding installations. **Compliance & Standards:** TAA compliant and RoHS/ELV directive certified, this patch cable meets rigorous government and environmental standards. All attenuation testing follows ANSI/TIA/EIA-455-171-A-2001 standards, guaranteeing third-party verified performance. The straight-through polarity design ensures proper signal flow in standard networking configurations. **Practical Applications:** Ideal for telecommunications facilities, data center interconnections, backbone networks, and any application requiring reliable single-mode fiber transmission. The 2.5-meter length accommodates standard equipment spacing in most installations, while custom lengths are available for unique requirements. **Warranty & Support:** Backed by a comprehensive 90-day limited warranty and shipped from multiple US locations, this cable includes free standard shipping on orders exceeding $99, making it a cost-effective solution for professional network infrastructure.