The JBX88379 7-meter ST/ST duplex singlemode fiber patch cable represents a professional-grade solution for telecommunications, data centers, and network infrastructure applications. Built with precision engineering, this cable features a 9/125 singlemode core utilizing G.657.A1 specification glass fiber, which delivers outstanding optical performance for long-distance signal transmission. **Key Performance Features:** This singlemode cable achieves exceptional low insertion loss of ≤0.35dB (0.15dB typical), with attenuation tested to ANSI/TIA/EIA-455-171-A standards. Operating at critical wavelengths (1310nm and 1550nm), it provides 0.25 dB/km and 0.35 dB/km attenuation respectively, making it ideal for high-speed, long-distance communications. The return loss specification of ≥20dB ensures signal integrity and minimal reflections. **Compliance and Standards:** TAA compliant and manufactured to meet RoHS/ELV directives, this cable satisfies government procurement requirements and environmental standards. The duplex configuration with Type A to B crossover polarity represents the most common wiring standard for patch cords, ensuring compatibility with existing infrastructure. **Construction and Durability:** The 1.8mm outer diameter jacketing is OFNR riser-rated, suitable for indoor installations in plenum and riser areas. This robust construction protects the fiber core while maintaining flexibility for equipment mounting. Available in distinctive purple for easy circuit identification and visual organization in busy server environments. **Flexibility and Support:** While this product is offered as a 7-meter standard length, custom lengths are available for specific installation requirements. Each cable includes a 90-day limited warranty. Ships from strategically located US fulfillment centers in California, Texas, and South Carolina, with free standard shipping on orders exceeding $99. Perfect for telecommunications professionals, network administrators, and data center specialists seeking reliable, compliant fiber connectivity solutions.