The JBX42312 SC/APC to FC/UPC duplex singlemode fiber patch cable represents a professional-grade solution for telecommunications infrastructure, data center connectivity, and enterprise network installations. This 10-meter cable delivers the precision performance required for mission-critical fiber optic communications. **Technical Excellence** Constructed with 9/125 singlemode fiber and G.657.A1 glass fiber technology, this duplex cable supports transmission across standard telecommunications wavelengths (1310nm and 1550nm). The cable achieves exceptional performance metrics with insertion loss of ≤0.35dB (typically 0.15dB) and return loss of ≥20dB, exceeding industry standards for signal integrity. All attenuation specifications are tested according to ANSI/TIA/EIA-455-171-A-2001 standards, ensuring reliable performance in production environments. **Connector Configuration** The SC/APC to FC/UPC connector pairing provides a flexible solution for network architectures combining different connector types. The Type A to B crossover polarity configuration represents the industry-standard duplex arrangement, eliminating compatibility concerns in most installations. APC (Angle Physical Contact) connectors on the SC end offer superior return loss characteristics, while FC/UPC connectors provide secure screw-locking termination. **Safety and Compliance** The yellow OFNR (Optical Fiber Non-conductive Riser) jacket meets fire safety requirements for vertical cable runs in building installations. Full TAA compliance and RoHS/ELV directive adherence make this cable suitable for government and enterprise procurement. Manufacturing across Taiwan, US, and China facilities ensures quality consistency and supply reliability. **Practical Advantages** The bright yellow jacket enables quick visual identification in dense cable environments, reducing installation errors and simplifying maintenance. The compact 1.8mm outer diameter fits standard cable trays and conduit systems. Available in custom lengths beyond the standard 10m option, allowing optimization for specific deployment scenarios. **Warranty and Support** Backed by a 90-day limited warranty with shipping available from three US distribution centers (Danville CA, Fort Worth TX, and Beaufort SC), ensuring fast delivery nationwide. Free standard shipping applies to orders exceeding $99. **Applications** Ideal for fiber-to-the-premises (FTTP) networks, data center backbone connectivity, telecommunications equipment interconnection, laboratory testing, and network upgrades requiring reliable singlemode fiber transmission.