The JBX43621 50-meter FC/APC to ST/UPC simplex fiber patch cable represents a professional-grade solution for connecting optical network components in telecommunications, data centers, and enterprise network environments. This single-strand fiber cable is engineered to transmit high-speed data signals with exceptional reliability and minimal signal loss. **Technical Excellence:** Constructed with 9/125 singlemode fiber and G.657.A1 glass composition, this cable delivers superior performance characteristics. The low insertion loss specification of ≤0.35dB (with typical performance of 0.15dB) ensures signal integrity over longer distances. Return loss exceeding 20dB provides excellent reflection suppression, while attenuation rates of 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm meet industry standards for backbone applications. **Robust Construction:** The cable features a 1.8mm outer diameter with OFNR (Optical Fiber Non-conductive Riser) jacketing, making it suitable for vertical routing through building risers without requiring conduit. The yellow jacket provides easy identification during installation and maintenance. **Compliance & Standards:** TAA compliant for government and institutional procurement, RoHS/ELV certified for environmental compliance, and tested in accordance with ANSI/TIA/EIA-455-171-A standards. The straight-through polarity configuration ensures proper signal transmission alignment. **Flexible Solutions:** Available in custom lengths to suit specific deployment requirements, this cable is ideal for test environments, permanent installations, and backup connectivity. Multiple US shipping locations (Danville CA, Fort Worth TX, Beaufort SC) enable rapid deployment. **Perfect For:** Telecommunications equipment interconnection, fiber optic backbone installation, DWDM system connections, and enterprise network upgrades. The 90-day limited warranty provides peace of mind for critical network infrastructure investments.