The JBX43679 is a professional 40-meter LC/UPC to FC/APC simplex singlemode fiber patch cable engineered for telecommunications, data center, and network infrastructure applications. This cable combines superior optical performance with practical design features that network professionals demand. Optical Performance & Specifications: With a 9/125 singlemode core and G.657.A1 grade glass fiber, the cable delivers consistent performance across operating wavelengths. Insertion loss of ≤0.35dB (typical 0.15dB at 1550nm) and return loss ≥20dB exceed industry standards for signal clarity. Testing conducted in accordance with ANSI/TIA/EIA-455-171-A-2001 ensures reliable attenuation measurements at 1310nm (0.25dB/km) and 1550nm (0.35dB/km). Physical Design: The yellow OFNR riser-rated jacket provides visibility in installations while meeting flame-spread requirements for building use. The compact 1.8mm outside diameter accommodates dense cable routing without sacrificing durability. Simplex configuration supports unidirectional signal transmission, ideal for specialized applications requiring single-strand connectivity. Compliance & Quality: TAA compliant manufacturing meets federal procurement requirements. RoHS/ELV compliance ensures environmental responsibility. The 90-day limited warranty provides customer confidence in product reliability. Practical Benefits: Available in custom lengths beyond the standard 40m offering, allowing optimization for specific installation requirements. Multiple fulfillment centers in Danville, CA; Fort Worth, TX; and Beaufort, SC enable rapid delivery. Qualifying orders receive free standard shipping. Ideal Applications: Data center connectivity, telecommunications networks, CATV systems, and laboratory fiber testing environments benefit from this cable's precision engineering and consistent performance. Network administrators and installers appreciate the yellow identification, reliable connector pairs, and tested performance specifications that minimize troubleshooting.