The JBX43036 4-meter LC/APC to LC/APC simplex singlemode fiber patch cable represents professional-grade connectivity for demanding optical networks. This single-strand fiber cable is engineered specifically for applications requiring precise, low-loss signal transmission over standard telecommunications distances. **Technical Specifications:** This cable features a 9/125 micrometers singlemode core optimized for wavelengths of 1310nm and 1550nm, with attenuation rates of 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm. The insertion loss specification of ≤0.35dB (0.15dB typical) ensures minimal signal degradation, while return loss ≥20dB provides excellent back-reflection performance. Testing conducted per ANSI/TIA/EIA-455-171-A-2001 standards guarantees consistent, measurable performance. **Design & Durability:** With a compact 1.8mm outside diameter, this cable fits within standard cable management systems while maintaining structural integrity. The yellow OFNR (Optical Fiber Non-Conductive Riser) rated jacket provides fire safety compliance suitable for building installations, and the RoHS/ELV compliant plastic accessory construction meets environmental standards for responsible electronics manufacturing. **Applications & Use Cases:** Ideal for backbone connections, uplinks, and single-direction transmission scenarios in data centers, telecommunications facilities, and enterprise networks. The simplex configuration serves applications where unidirectional signal flow is required, such as dedicated receive or transmit lines. **Government & Procurement Compliance:** Fully TAA (Trade Agreements Act) compliant, this cable meets federal procurement requirements and is manufactured in Taiwan, the United States, or China. This compliance makes it an excellent choice for government agencies, defense contractors, and organizations with strict procurement mandates. **Custom Solutions Available:** While this product ships in 4-meter lengths, custom lengths are available to accommodate specific installation requirements. Ships from multiple distribution centers (Danville CA, Fort Worth TX, Beaufort SC) for expedited delivery. **Warranty & Support:** 90-day limited warranty provides peace of mind, while free standard shipping on orders exceeding $99 offers cost-effective procurement for bulk orders.