HP 487649-B21 0.5m SFP+ passive direct attach copper (DAC) twinax cable for high-speed interconnect in FlexFabric switch environments. SFP+ connectors on both ends support 10 Gbps Ethernet connectivity between compatible switches, servers, and storage arrays without active electronics or external power. The 0.5-meter length accommodates short-reach rack and switch-stack deployments. This cable is compatible with HP FlexFabric 5900, 5930, and related series switches, as well as third-party SFP+ equipment. Typical applications include ToR and leaf-spine fabric builds, server uplinks, and direct storage connections. Passive DAC design reduces power consumption and heat compared to active optics while maintaining performance for reaches up to approximately 7 meters in well-designed networks.Tested and guaranteed; available via quote from G5 Network Group.