The JBX05484 40GBASE-CR4 QSFP+ Passive Direct Attach Copper Cable represents an essential networking component for modern enterprise and data center infrastructure. Specifically engineered for Juniper networking equipment, this 3-meter cable delivers exceptional performance at 40 gigabits per second while maintaining the simplicity and reliability of passive connectivity. **Technical Excellence** This passive DAC cable utilizes premium 30AWG twinax copper construction paired with durable plastic jacketing, ensuring optimal signal integrity and longevity. The QSFP+ to QSFP+ copper connectors conform to IEEE 802.3ba and SFF-8436 standards, guaranteeing compatibility across certified networking equipment. The 3-meter length provides ideal flexibility for rack-to-rack and switch-to-server deployments in constrained data center spaces. **Juniper Compatibility** Direct replacement for Juniper original equipment manufacturer part numbers including EX-QSFP-40GE-DAC-3M, JNP-QSFP-DAC-3M, and QFX-QSFP-DAC-3M, ensuring drop-in compatibility with existing Juniper infrastructure including EX, QFX, and other compatible platforms. **Compliance & Reliability** RoHS and EU directive 2002/95/EC compliant with full TUV and UL safety certifications. Operating temperature range from 0-70°C supports both standard and elevated ambient environments. Backed by a 90-day limited warranty. **Cost-Effective Performance** Passive design eliminates active circuitry and power consumption, reducing operational costs compared to active optical alternatives while delivering identical 40Gbps performance over short distances. Ideal for organizations seeking maximum network performance without premium pricing. **Applications** Optimal for data center fabric connectivity, server-to-switch links, switch-to-switch interconnects, and high-density networking environments. Particularly valuable for organizations standardizing on Juniper platforms seeking reliable, cost-effective 40G connectivity solutions. Ships from multiple U.S. locations (Danville, CA and Beaufort, SC) with free standard shipping on orders exceeding $99.