Arista CAB-Q-Q-0.5M-Arista | 40G QSFP+ Passive DAC Cable, 0.5m Twinax

Q: What is the maximum transmission distance for this cable?
A: The CAB-Q-Q-0.5M is designed for 0.5-meter (50cm) connections. Passive copper DAC cables are intended for short-distance intra-rack connectivity only. For longer distances, consider active optical cables or fiber transceivers.

Q: Is this cable compatible with non-Arista equipment?
A: While this cable is designed and programmed specifically for Arista switches and routers, passive DAC cables are typically interoperable across vendors when both devices support standard 40GBASE-CR4. However, compatibility testing with your specific equipment is recommended.

Q: What are the advantages of passive DAC over fiber optics for short connections?
A: Passive DAC cables offer significantly lower cost, reduced power consumption (no optical transceivers required), lower latency, and simpler installation compared to fiber solutions. They are ideal for high-density data center deployments where connections are within the same rack or adjacent racks.

Q: Does this cable support breakout configurations?
A: No, the CAB-Q-Q-0.5M is a standard 40G QSFP+ to QSFP+ cable providing a single 40 Gb/s link. It does not support 4x10G breakout functionality. For breakout applications, you would need specific breakout cables or modules.

Q: What maintenance or care does this cable require?
A: Passive copper DAC cables require minimal maintenance. Ensure connectors are clean and free from debris before insertion. Avoid excessive bending beyond the minimum bend radius. Store unused cables in a cool, dry environment. The cable supports hot-plug operation for easy installation and removal.