The JBX87186 4-meter SC/ST duplex singlemode fiber patch cable represents a premium solution for mission-critical fiber optic networking applications. Designed to meet stringent telecommunications standards, this cable combines exceptional performance with compliance certifications required by government and enterprise customers. **Technical Specifications:** This duplex patch cable features dual 9/125 singlemode fiber strands with G.657.A1 glass composition, optimized for low-loss signal transmission across multiple wavelengths. The SC/UPC to ST/UPC connector configuration provides low-reflection interfaces, while the Type A to B crossover polarity enables standard duplex communication patterns. At 1310 nm wavelength, attenuation is 0.25 dB/km; at 1550 nm, it measures 0.35 dB/km. **Performance & Reliability:** With typical insertion loss of just 0.15dB and maximum specification of ≤0.35dB, this cable minimizes signal degradation over its 4-meter length. The ≥20dB return loss specification ensures minimal signal reflection, critical for high-speed data transmission. Testing compliance with ANSI/TIA/EIA-455-171-A-2001 standards guarantees performance verification. **Installation & Compliance:** The OFNR riser-rated jacket allows installation in vertical cable runs within building structures without conduit. RoHS/ELV and TAA compliance certifications make this cable suitable for government contracts, institutional procurement, and regulated environments. The blue jacket provides clear visual identification in complex cable installations. **Applications:** Ideal for data center interconnects, telecommunications networks, campus area networks, and laboratory instrumentation requiring precise optical signal transmission. The 4-meter length suits intermediate distance connections between network equipment. **Custom Availability:** While this product is available as a standard 4-meter configuration, custom lengths can be ordered to meet specific installation requirements. Backed by a 90-day limited warranty and eligible for free standard shipping on orders exceeding $99, this cable offers both performance and value for professional network deployments.