The JBX42459 9-meter FC/APC to FC/APC duplex singlemode fiber patch cable represents a precision-engineered solution for professional fiber optic networking. Designed to meet the stringent requirements of modern telecommunications infrastructure, this cable delivers reliable, high-performance signal transmission across extended distances. **Technical Excellence:** Constructed with a 9/125 singlemode core using G.657.A1 glass fiber, this cable achieves exceptional optical characteristics. The measured insertion loss of ≤0.35dB (typical 0.15dB) ensures minimal signal degradation, while return loss ≥20dB provides superior signal integrity. Attenuation performance of 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm makes it suitable for both short-reach and long-distance applications. **Compliance & Certification:** TAA compliant for government procurement, RoHS/ELV certified per EU directive 2002/95/EC, and tested to ANSI/TIA/EIA-455-171-A standards. The OFNR riser-rated yellow jacket provides fire safety compliance while facilitating cable identification in densely populated installations. **Practical Design Features:** The compact 1.8mm outer diameter enables installation in cable trays, conduit, and wall-mounted applications. Type A to B crossover polarity configuration supports standard duplex patch cord applications. The 9-meter length accommodates medium-distance connections in data centers, telecommunications rooms, and network facilities. **Applications:** Ideal for fiber-to-the-premises (FTTP), metro area networks (MAN), local area networks (LAN), and telecommunications backbone connections. Compatible with FC/APC connectors found in telecommunications equipment, test instruments, and network infrastructure. **Custom Options:** Available in custom lengths to meet specific installation requirements. Ships from multiple U.S. locations (Danville CA, Fort Worth TX, Beaufort SC) with free standard shipping on orders exceeding $99. **Warranty & Support:** 90-day limited warranty provides confidence in product reliability. Manufactured in Taiwan, USA, and China to ensure consistent quality and availability.