The JBX42678 35-meter FC/APC to LC/UPC duplex singlemode fiber patch cable is engineered for professional networking and telecommunications infrastructure. This high-performance cable bridges FC/APC and LC/UPC connectors, providing versatile compatibility across diverse network architectures. **Technical Excellence** Featuring a 9/125 micron singlemode core, this cable transmits data over extended distances with minimal attenuation (0.25 dB/km at 1310nm, 0.35 dB/km at 1550nm). Insertion loss specifications of ≤0.35dB typical and return loss ≥20dB ensure signal integrity critical for telecommunications, enterprise networks, and data center deployments. Each cable is attenuation-tested according to ANSI/TIA/EIA-455-171-A standards. **Superior Construction** The 1.8mm diameter duplex cable features G.657.A1 glass fiber, offering improved bend radius performance without compromising long-distance transmission capabilities. OFNR riser-rated jacketing provides fire safety compliance and environmental resistance, making it suitable for both horizontal and vertical cable routing within buildings. **Compliance & Reliability** TAA compliant for government and educational institutions, with RoHS/ELV certification ensuring environmental responsibility. Type A to B crossover polarity configuration optimizes duplex patch cord performance. The yellow jacket provides high visibility for cable identification and management in complex installations. **Practical Benefits** With free standard shipping on orders over $99 and domestic US warehousing (California, Texas, South Carolina), rapid deployment is assured. Custom length availability accommodates specific installation requirements. The 90-day limited warranty provides confidence in product reliability. **Applications** Ideal for connecting FC/APC equipment to LC/UPC network infrastructure in telecommunications facilities, data centers, and enterprise networks. Commonly used for backbone connections, equipment interconnects, and network upgrades requiring reliable, standards-compliant fiber connectivity.