This Axiom QSFP+ 40Gbps Passive Direct Attach Cable (DAC) is designed to provide reliable, high performance, and cost-effective network connectivity in Dell switches, servers, data arrays, and router product platforms. Optimized and tested 100% compatible with the Dell 331-1655 Passive Direct Attach Cable, this Axiom 40Gb Direct Attached Cable, part number 331-1655-AX is qualified as an OEM alternative and will function identical to the Dell cable in all applicable inter-networked applications. This passive Direct Attach Cable meets all environmental mandated requirements for Restriction of Hazardous Substances (RoHS) compliance and is fully compliant to the latest CFP MSA (multi-source agreement) . This Axiom QSFP+ copper assembly meets SFF-8436 and IEEE 802.3ba standards and is optimized for bandwidth intensive applications like 40-Gigabit Ethernet (40GBASE-CR4), 6G SAS, Fibre Channel, and SONET, for multi-platform support. Axiom networking interconnectivity products offer the same functionality, performance, quality, and reliability that are characteristic of the OEM branded options. Rigorous testing procedures ensure the performance integrity of Axiom's entire transceiver and cable interconnect portfolio, while utilizing tier-one components and the most stringent manufacturing processes available.