The JBX42256 LC/APC to ST/UPC 25-meter duplex singlemode fiber patch cable represents professional-grade connectivity for mission-critical network applications. Engineered with precision to meet demanding industry standards, this cable combines superior performance with practical reliability. Technical Excellence: Built with 9/125 singlemode fiber core and G.657.A1 glass composition, the cable achieves exceptional optical performance. Insertion loss measurements of ≤0.35dB (0.15dB typical) and return loss ≥20dB ensure minimal signal degradation across extended network runs. Attenuation specifications of 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm comply with stringent ANSI/TIA/EIA-455-171-A-2001 standards, guaranteeing reliable long-distance data transmission. Practical Design: The distinctive yellow jacket provides critical visibility in complex cable management environments, reducing installation errors and simplifying network maintenance. With a slim 1.8mm outside diameter, the cable navigates tight cable trays and patch panel configurations without strain. The duplex configuration delivers bidirectional communication through a single cable run, optimizing space utilization in dense equipment racks. Standards & Compliance: TAA compliant and RoHS/ELV certified, this optical accessory meets stringent government and environmental regulations. The OFNR (riser-rated) jacketing ensures safe installation in building plenum spaces and vertical cable runs. Flexible Customization: While this 25m configuration serves most standard applications, custom lengths are available to match your specific network topology. Type A to B crossover polarity provides the most versatile compatibility with existing equipment. Ideal Applications: Perfect for data center interconnections, telecommunications facilities, enterprise campus networks, and long-distance backbone connections. The 90-day limited warranty and domestic shipping from multiple US locations (Danville CA, Fort Worth TX, Beaufort SC) ensure rapid deployment and reliable support.