The JBX43491 ST/APC to ST/UPC simplex fiber patch cable is a high-performance optical connectivity solution designed for professionals requiring reliable fiber optic signal transmission. This 9-meter cable combines precise engineering with stringent quality standards to meet demanding telecommunications and data center environments. **Technical Specifications:** Built with a 9/125 singlemode core and G.657.A1 grade glass fiber, this cable supports both 1310nm and 1550nm wavelengths with optimal attenuation rates (0.25 dB/km at 1310nm or 0.35 dB/km at 1550nm). The simplex design accommodates single-directional signal flow, making it ideal for dedicated transmit or receive applications. Insertion loss of ≤0.35dB (typical 0.15dB) and return loss ≥20dB ensure minimal signal degradation and superior link performance. **Construction & Compliance:** The cable features a durable 1.8mm outer diameter jacket with riser-rated (OFNR) flame resistance, suitable for vertical runs in building installations. The yellow jacket aids in fiber identification within complex network environments. TAA compliance and RoHS/ELV certification make this cable eligible for government contracts and environmentally conscious procurement programs. **Applications:** Ideal for laboratory testing, telecommunications infrastructure, enterprise networks, and data center interconnects requiring single-strand simplex connections. The ST/APC to ST/UPC configuration accommodates mixed connector environments common in network upgrades and hybrid deployments. **Quality Assurance:** Each cable is tested according to ANSI/TIA/EIA-455-171-A-2001 standards and backed by a 90-day limited warranty. Custom lengths are available for specialized installations, providing flexibility beyond the standard 9-meter offering. **Value & Convenience:** Qualify for free standard shipping on orders exceeding $99, with fast fulfillment from multiple U.S. locations (Danville, CA; Fort Worth, TX; Beaufort, SC). This combination of performance, compliance, and accessibility makes it an excellent choice for budget-conscious IT professionals and network integrators.