Arista

Arista CAB-Q-S-3M | QSFP+→4xSFP+ DAC | 40G→4x10G | 40GBASE-CR4/10GBASE-CR | 3m | Twinax | Breakout

Arista CAB-Q-S-3M | QSFP+→4xSFP+ DAC | 40G→4x10G | 40GBASE-CR4/10GBASE-CR | 3m | Twinax | Breakout

SKU:CAB-Q-S-3M

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Description

Reliable QSFP+ to 4x SFP+ twinax DAC breakout for extending 40G-to-4x10G connectivity up to 3 meters with minimal latency and power. Ideal for TOR and server access.

Features

- Cost-effective 40G-to-4x10G fan-out without transceivers
- Low-latency passive copper for deterministic performance
- Simple, tool-less installation
- Broad interoperability via MSA compliance
- Durable twinax construction for data center use

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: Do I need any configuration for breakout?
A: Your switch/QSFP+ port must support breakout mode (split to 4x10G). Many platforms require an interface profile or port mode change.

Q: Can I mix vendors on each end?
A: Often yes with MSA DACs, but some vendors enforce coding. Check platform-specific DAC compatibility policies.

Q: Is the 3m cable still passive?
A: Yes, 3m DAC breakouts are typically passive and suitable for short in-rack or adjacent-rack runs.

Q: What applications suit a 3m length?
A: Top-of-rack to server NICs, leaf to storage nodes, or lab racks with modest spacing.

Technical Specifications

- Interface/form: QSFP+ to 4x SFP+ breakout (1x40G → 4x10G)
- Data rate: 40GbE aggregate; 4x 10GbE lanes
- Standards: IEEE 802.3ba (40G), IEEE 802.3ae (10G); MSA SFF-8436, SFF-8431
- Cable type: Direct-Attach Copper (DAC), twinax, passive
- Length/reach: 3 meters
- Connector ends: QSFP+ plug ↔ 4x SFP+ plugs
- Wavelength: n/a (copper)
- Typical power: <0.1 W per end
- Operating temperature: 0°C to 70°C
- Compliance: RoHS

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