The JBX42663 FC/APC to LC/UPC Duplex Singlemode Fiber Patch Cable is engineered for demanding professional networking applications where signal integrity and reliability are paramount. This 2-meter cable delivers exceptional performance characteristics that exceed industry standards. **Technical Excellence:** Featuring a 9/125 singlemode fiber core with advanced G.657.A1 glass fiber composition, this duplex cable provides superior signal transmission capabilities. The cable achieves an insertion loss of ≤0.35dB at 0.15dB typical performance, with return loss specifications exceeding 20dB. These measurements are tested and certified in accordance with ANSI/TIA/EIA-455-171-A-2001 standards, ensuring consistent, measurable performance across installations. **Compliance and Safety:** TAA compliant for government and institutional procurement requirements, this cable meets rigorous regulatory standards. The OFNR (Optical Fiber Non-conductive Riser) jacket rating ensures safe installation in building risers and vertical cable runs, while full RoHS/ELV compliance demonstrates environmental responsibility without compromising performance. **Design Features:** The distinctive yellow jacket serves dual purposes: aesthetic identification in complex multi-cable environments and quick visual verification during installation and troubleshooting. The 1.8mm outside diameter provides flexibility for routing through conduit and tight spaces, while the durable plastic construction resists environmental stress. **Versatile Connectivity:** The Type A to B crossover configuration represents the industry standard for duplex patch cord applications, eliminating confusion and installation errors. This connector pairing works seamlessly with existing FC/APC and LC/UPC infrastructure components. **Practical Advantages:** Available in custom lengths beyond the standard 2-meter option, allowing precise cable routing without excess slack or inadequate reach. Ships from multiple U.S. locations ensuring rapid delivery. Standard shipping qualifies for free delivery on orders exceeding $99, reducing total project costs. **Applications:** Ideal for telecommunications networks, data center connectivity, fiber optic test equipment interconnects, CATV systems, and enterprise network backbone connections. The singlemode specification supports long-distance, high-bandwidth applications where multimode cables would introduce unacceptable signal degradation. **Quality Assurance:** Backed by a 90-day limited warranty, demonstrating manufacturer confidence in product durability and performance. Manufactured to exacting standards in certified facilities across Taiwan, the United States, and China.