Arista

Arista CAB-D-2Q-400-2.5 | 400G to 2x200G DAC | QSFP-DD to 2x QSFP56 | 400GBASE-CR8 / 200GBASE-CR4 | Copper (no wavelength) | 2.5m | Twinax Direct Attach

SKU:CAB-D-2Q-400-2.5

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Description

Breakout direct-attach copper cable for fanning a single 400G QSFP‑DD port into two 200G QSFP56 links. Ideal for flexible port utilization in 400G fabrics where hosts support 400G→2x200G breakout under IEEE 802.3 CR.

Features

- 400G to dual 200G breakout for optimal port utilization
- QSFP‑DD to 2x QSFP56 form factor for 200G endpoints
- Passive, zero-power, ultra-low latency copper link
- 2.5m reach ideal for in-rack deployments
- Standards-compliant CR8/CR4 for reliable interoperability
- Durable twinax construction with secure latching

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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Technical Specifications

Technical Specifications

- Data rate: 400G aggregate to 2x 200G breakout
- Standards: 400GBASE-CR8 and 200GBASE-CR4
- Form factors: QSFP‑DD (host) to 2x QSFP56 (breakout)
- Cable type: Direct Attach Copper (Twinax), passive
- Length: 2.5 meters
- Lanes: 8 lanes fanned to 2x 4 lanes
- Low latency, zero power consumption
- Use cases: switch or accelerator port breakout in dense racks
- Compliance: IEEE 802.3 CR, QSFP‑DD and QSFP56 MSA

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