The JBX86184 SC/ST Duplex Singlemode Fiber Patch Cable represents professional-grade connectivity engineered for telecommunications, data centers, and enterprise networks requiring reliable long-distance fiber optic transmission. **Key Features:** This 2.5-meter patch cable utilizes G.657.A1 glass fiber technology with a 9/125 micron singlemode core, enabling transmission across standard telecom wavelengths (1310nm and 1550nm). The duplex configuration features SC/UPC connectors on one end and ST/UPC connectors on the other, configured as Type A to B crossover—the most common polarity for duplex patch cords. The 1.8mm outer diameter provides flexibility for dense cable management environments. **Performance Specifications:** Tested in accordance with ANSI/TIA/EIA-455-171-A-2001 standards, this cable delivers exceptional optical performance: insertion loss of ≤0.35dB at 1550nm and 0.25dB/km at 1310nm, with return loss exceeding 20dB. These specifications ensure minimal signal degradation over longer runs, critical for backbone applications and telecommunications infrastructure. **Compliance & Quality:** Full TAA (Trade Agreements Act) compliance makes this cable suitable for government and enterprise procurement. RoHS/ELV certification confirms environmental safety and compliance with EU Directive 2002/95/EC. The riser-rated (OFNR) jacketing meets building safety codes for installation in vertical cable runs. All units ship with a 90-day limited warranty. **Applications:** Ideal for connecting network equipment in server rooms, telecommunications closets, and campus backbone networks. Suitable for DWDM systems, long-haul telecommunications, and any application requiring singlemode precision with minimal signal loss. **Customization & Availability:** While this product is offered in 2.5m lengths, custom lengths are available for specific installation requirements. Ships from multiple US locations (Danville CA, Fort Worth TX, Beaufort SC) with free standard shipping on orders over $99.