Axiom Memory Axiom 40GBase-CR4 to 4x 10GBase-CU direct attach cable delivers a simple, cost-effective way to connect high-density network equipment for short-reach links. The passive twinax construction provides reliable copper connectivity with minimal setup, making it suitable for top-of-rack, switch-to-switch, and server-to-switch connections where full interoperability and compact cabling are priorities. The cable uses QSFP male connectors on both ends and complies with MSA standards for predictable compatibility with compatible QSFP ports.