The JBX42015 LC/APC to LC/UPC duplex single mode fiber patch cable represents professional-grade connectivity for demanding telecommunications and data center environments. This 20-meter cable delivers exceptional optical performance with measured insertion loss of 0.15dB typical (≤0.35dB maximum) and return loss exceeding 20dB, ensuring signal integrity across your network infrastructure. Key Technical Specifications: This cable features a 9/125 micron single mode fiber core optimized for long-distance transmission with minimal chromatic dispersion. The G.657.A1 glass fiber specification provides excellent bend performance while maintaining backward compatibility with standard G.652.D installations. Operating across both C-band (1550nm) and O-band (1310nm) wavelengths, the cable achieves 0.25dB/km attenuation at 1310nm and 0.35dB/km at 1550nm. Construction and Durability: The 1.8mm outer diameter jacketing is OFNR (Optical Fiber Non-conductive Riser) rated, meeting building codes for indoor plenum and riser installations. The durable yellow jacket provides visual identification in complex cable management scenarios while resisting UV and environmental degradation. Constructed from RoHS/ELV compliant materials, this cable meets EU Directive 2002/95/EC requirements. Applications and Use Cases: Ideal for telecommunications networks, data centers, campus networks, and high-speed LAN interconnections. The Type A to B cross-over configuration ensures proper polarity alignment in duplex systems. Whether implementing DWDM systems, connecting network switches, or extending backbone infrastructure, this cable provides reliable signal transmission. Value and Compliance: TAA (Trade Agreements Act) compliant, making it suitable for government and institutional procurement. Ships with free standard shipping on orders exceeding $99 from strategically located warehouses in California, Texas, and South Carolina. Available in custom lengths for specialized installations. The 90-day limited warranty provides confidence in your network investment.