Arista

Arista CAB-Q-Q-5M | 40G | QSFP+↔QSFP+ | 40GBASE-CR4 | n/a | 5m | passive twinax DAC

Arista CAB-Q-Q-5M | 40G | QSFP+↔QSFP+ | 40GBASE-CR4 | n/a | 5m | passive twinax DAC

SKU:CAB-Q-Q-5M

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Description

Passive 40GbE QSFP+ to QSFP+ direct-attach copper (DAC) cable, 5 meters. Standards-compliant with IEEE 802.3ba 40GBASE-CR4 and QSFP+ MSA (SFF-8436), providing low-latency, low-power connectivity for short-reach aggregation, spine/leaf, or switch-to-server links. Durable twinax assembly with reliable latching for secure, consistent performance.

Features

- Cost-effective 40G short-reach interconnect
- Passive twinax for minimal latency and power
- QSFP+ MSA compliant for wide compatibility
- Secure latching and robust build quality
- Plug-and-play deployment

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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FAQs

Technical Specifications

FAQs

Q: Is this cable suitable for 40G switch to 40G switch links?
A: Yes, it is designed for QSFP+ 40G ports that support passive DAC.

Q: What is the wavelength?
A: Not applicable; this is a copper DAC with no optics.

Q: Do I need external power?
A: No, passive DACs draw negligible power from the host port and have no active components.

Q: Can it be used for stacking?
A: If your platform supports stacking over QSFP+ passive DAC, it can be used; verify device documentation.

Technical Specifications

- Interface speed: 40 Gbps (CR4)
- Cable type: Passive copper twinax, direct-attach (DAC)
- Form factor/connectors: QSFP+ male to QSFP+ male
- Length: 5 meters
- Standards: IEEE 802.3ba 40GBASE-CR4; QSFP+ MSA (SFF-8436)
- Power: Passive, near-zero power consumption
- Latency: Ultra-low, no optical conversion
- Use case: Short-reach spine/leaf, switch-to-switch, switch-to-server
- Compatibility: QSFP+ 40G ports that support passive DAC

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