The JBX42990 45-meter LC/UPC to LC/UPC singlemode fiber patch cable represents enterprise-grade connectivity for demanding network infrastructures. This simplex cable is purpose-built for single-direction fiber signal transmission, making it ideal for point-to-point connections in data centers, telecommunications facilities, and high-speed network installations. **Technical Excellence** Constructed with 9/125 singlemode fiber and G.657.A1 glass fiber standards, this cable minimizes signal degradation across long distances. Tested and certified to ANSI/TIA/EIA-455-171-A-2001 standards, it delivers consistent attenuation performance: 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm. With insertion loss as low as 0.15dB typical (maximum 0.35dB) and return loss exceeding 20dB, this cable ensures crystal-clear data transmission for voice, video, and high-bandwidth applications. **Compliance and Safety** TAA (Trade Agreements Act) compliant for federal procurement, RoHS/ELV certified for environmental compliance. The OFNR (Optical Fiber Non-conductive Riser) jacketing rating ensures safe installation in vertical runs and building plenum spaces, meeting fire code requirements across North America. **Design Features** The distinctive yellow outer jacket provides easy identification in complex cable environments, reducing installation errors. LC/UPC connectors with straight-through polarity ensure reliable mating without signal reflection. The compact 1.8mm outside diameter permits flexible routing through existing cable infrastructure without requiring extensive conduit upgrades. **Flexibility and Support** While this product ships at 45 meters, custom lengths are available for specific installation requirements. With free standard shipping on orders over $99 and a 90-day limited warranty, this patch cable offers exceptional value for IT professionals and network integrators. Ships from multiple US locations for faster delivery. **Applications** Ideal for LAN/WAN backbone connections, SFP transceiver implementations, fiber-to-the-desk installations, and telecommunications equipment interconnections where singlemode transmission is required.