The JBX42067 LC/APC to SC/UPC duplex singlemode fiber patch cable is a professionally engineered solution designed to meet the exacting demands of modern data center, telecommunications, and enterprise networking infrastructure. This 5-meter cable represents the ideal balance of performance, compliance, and reliability for mission-critical applications. **Technical Excellence** Constructed with a 9/125 micrometer singlemode fiber core using G.657.A1 glass fiber, this cable delivers superior light transmission characteristics. Testing conducted in accordance with ANSI/TIA/EIA-455-171-A-2001 standards confirms insertion loss of ≤0.35dB (0.15dB typical) at both 1310nm and 1550nm wavelengths, with return loss exceeding 20dB. These specifications ensure minimal signal attenuation and reflection, critical for long-distance telecommunications and high-bandwidth data transmission. **Connector Configuration** The LC/APC to SC/UPC connector pairing provides a Type A to B crossover configuration—the most common duplex patch cord setup. APC (Angled Physical Contact) connectors on the LC side offer superior return loss characteristics, while UPC (Ultra Physical Contact) connectors on the SC side maintain compatibility with standard enterprise equipment. **Installation & Compliance** The 1.8mm outer diameter yellow jacket features OFNR (Optical Fiber Non-conductive Riser) rating, allowing safe installation in vertical building pathways without additional conduit. TAA (Trade Agreements Act) compliance ensures eligibility for government and regulated procurement processes. RoHS/ELV directive compliance demonstrates environmental responsibility and compatibility with modern electronics standards. **Practical Advantages** Available in custom lengths beyond the standard 5-meter offering, this cable adapts to diverse installation scenarios. Ships from multiple U.S. locations (California, Texas, South Carolina) ensuring rapid delivery. Qualified for free standard shipping on orders exceeding $99, providing excellent value for network expansion projects. **Applications** Ideal for connecting legacy SC/UPC equipment to modern LC/APC infrastructure, data center interconnects, telecommunications backbone networks, and research facility installations. The duplex configuration supports simultaneous bidirectional transmission on separate fibers, essential for full-duplex communication protocols. **Quality Assurance** Backed by a 90-day limited warranty, manufactured to specifications ensuring consistent performance across production batches. Standards-tested attenuation characteristics (0.25dB/km at 1310nm, 0.35dB/km at 1550nm) exceed industry minimums, providing headroom for long cable runs and complex network topologies.