The JBX43373 12-meter SC/APC to ST/UPC simplex singlemode fiber patch cable represents professional-grade connectivity solutions for mission-critical networking applications. This cable seamlessly bridges SC/APC connectors to ST/UPC connectors, providing flexible compatibility across diverse network environments. **Technical Specifications:** Constructed with a 9/125 singlemode fiber core conforming to G.657.A1 specifications, this cable ensures optimal performance in long-distance signal transmission. The simplex configuration delivers single-direction transmission ideal for unidirectional communication links. With an outside diameter of just 1.8mm, the cable fits standard installation pathways and equipment ports. **Performance Characteristics:** Attenuation testing confirms exceptional low-loss performance: 0.25 dB/km at 1310nm or 0.35 dB/km at 1550nm wavelengths. Insertion loss remains at or below 0.35dB (typical 0.15dB), while return loss exceeds 20dB, ensuring minimal signal degradation and reflection. These specifications meet ANSI/TIA/EIA-455-171-A-2001 standards for reliability and quality. **Compliance & Safety:** TAA compliant certification makes this cable eligible for government and federal procurement initiatives. RoHS/ELV compliance ensures environmental responsibility and regulatory adherence. The OFNR riser-rated yellow PVC jacket provides fire safety for building installations while offering easy identification in cable management systems. **Applications:** Ideal for telecommunications facilities, data center upgrades, ISP infrastructure, enterprise LAN/WAN networks, and CATV systems. The straight-through polarity configuration ensures straightforward installation without requiring polarity conversion adapters. **Availability & Support:** Available in custom lengths for specialized installations. Free standard shipping on orders exceeding $99 with distribution centers in Danville, CA, Fort Worth, TX, and Beaufort, SC. Backed by a 90-day limited warranty for peace of mind. Custom configurations available to meet specific network requirements.