The JBX43440 45-meter FC/APC to FC/UPC simplex singlemode fiber patch cable represents the pinnacle of optical connectivity solutions for professional-grade networking infrastructure. This versatile cable is engineered for applications requiring exceptional signal clarity, minimal signal degradation, and reliable long-distance transmission. **Superior Performance Specifications:** With an insertion loss of just ≤0.35dB (typical 0.15dB) and return loss exceeding 20dB, this cable delivers excellent optical performance across telecommunications wavelengths. The attenuation specifications of 0.25 dB/km at 1310nm or 0.35 dB/km at 1550nm ensure minimal signal loss over the 45-meter span, making it ideal for both short-haul and long-distance applications. **Robust Construction:** The cable features a 9/125 micron singlemode fiber core with G.657.A1 rated glass fiber, providing flexibility without sacrificing performance. The yellow OFNR (riser-rated) jacket offers fire safety compliance for indoor building installations while the 1.8mm outer diameter enables efficient cable management and routing through conduits and patch panels. **Compliance & Standards:** Fullly TAA compliant and manufactured according to ANSI/TIA/EIA-455-171-A standards, this cable meets government procurement requirements and enterprise-level specifications. RoHS/ELV compliant with EU directive 2002/95/EC certification. **Practical Applications:** Ideal for data centers, telecommunications facilities, network closets, server room installations, and any environment requiring reliable fiber-optic signal transmission. The FC/APC to FC/UPC connector configuration provides compatibility with standard telecommunications infrastructure. **Availability & Support:** Ships from multiple U.S. locations (California, Texas, and South Carolina) with free standard shipping on orders over $99. Custom lengths available for specific installation requirements. Backed by a 90-day limited warranty for customer peace of mind.