The JBX05651 2-meter 100GBASE-CR4 QSFP28 to SFP28 direct attach copper cable represents the optimal solution for high-speed data center networking. Engineered as a direct replacement for Arista's CAB-Q-4S-100G-2M, this passive breakout DAC cable eliminates the need for active conversion modules, reducing power consumption and operational complexity in demanding network environments. Technical Excellence and Compliance This cable meets stringent industry standards, including IEEE 802.3bj specifications and QSFP28 MSA requirements. The 30AWG copper construction ensures optimal signal transmission for 100GB Ethernet applications. Manufactured to RoHS/ELV directive compliance (EU 2002/95/EC) and carrying UL and TUV safety certifications, the cable meets international regulatory requirements for enterprise deployments. Reliable Performance Specifications With a 2-meter length ideal for intra-rack and short-distance data center connectivity, the cable operates reliably across temperatures from 0-70°C (32-158°F). The passive design eliminates heat generation and potential failure points associated with active conversion equipment. The copper twinax construction with protective plastic jacketing provides durability while maintaining flexibility for cable routing. Practical Applications Perfect for connecting high-density 100GB network infrastructure, this breakout cable enables seamless integration with Arista switches and compatible equipment. It's particularly valuable for: - Data center core and leaf switch interconnections - Storage area network (SAN) backend connectivity - High-performance computing (HPC) cluster networking - Service provider backbone implementations Value and Support Backed by a 90-day limited warranty and available with custom brand programming options, this cable delivers enterprise-grade quality at competitive pricing. Free standard shipping on orders exceeding $99, with convenient fulfillment from U.S. distribution centers in Danville, CA and Beaufort, SC, ensures quick deployment. The cable's RoHS compliance and sustainable manufacturing make it an environmentally responsible choice for modern data centers. Choose the JBX05651 for reliable, standards-compliant 100GB connectivity that reduces total cost of ownership while maintaining the performance demands of today's data center infrastructure.