The JBX42084 65-meter LC/APC to SC/UPC duplex singlemode fiber patch cable represents premium-quality connectivity for modern telecommunications and data center environments. This professional-grade cable combines advanced optical performance with robust construction to deliver reliable, long-distance signal transmission. **Technical Excellence** Constructed with 9/125 singlemode fiber using G.657.A1 glass composition, this cable achieves exceptional optical performance. Measured insertion loss of ≤0.35dB (0.15dB typical) and return loss ≥20dB exceed industry standards, ensuring minimal signal degradation. Attenuation specifications of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm demonstrate compliance with ANSI/TIA/EIA-455-171-A-2001 standards. **Connector Configuration** The LC/APC to SC/UPC duplex arrangement provides flexibility for diverse network architectures. LC/APC connectors feature angled polished tips for superior return loss characteristics, while SC/UPC connectors offer robust mechanical stability. The Type A to B crossover polarity configuration represents the most common duplex patch cord standard, simplifying installation and reducing compatibility issues. **Construction and Compliance** The 1.8mm outside diameter yellow jacket is OFNR riser-rated, meeting stringent building codes for vertical cable runs within walls and plenums. RoHS/ELV certified and TAA compliant, this cable satisfies government procurement requirements and environmental regulations. The plastic accessory materials ensure lightweight handling without compromising durability. **Applications** Ideal for telecommunications closets, data centers, carrier networks, and enterprise backbone connectivity. The 65-meter length accommodates long-distance runs between network equipment while maintaining signal integrity. Duplex capability supports full-duplex communication protocols essential for modern networking standards. **Availability and Support** Ships from multiple US locations (Danville, CA; Fort Worth, TX; Beaufort, SC) for rapid delivery. Available in custom lengths upon request. Backed by 90-day limited warranty. Free standard shipping on orders exceeding $99. **Maintenance** Protect connectors with dust caps when not in use. Avoid excessive bending beyond the cable's minimum bend radius. Store in clean, temperature-controlled environments to preserve optical performance.