Arista

Arista CAB-D-4Q-200G-1M | 200G DAC breakout | QSFP-DD to 4x QSFP28 | 200GBASE-CR8 / 50GBASE-CR2 | Copper (no wavelength) | 1m reach | Passive twinax

SKU:CAB-D-4Q-200G-1M

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Description

High-density passive DAC breakout for short-reach 200G to 4x50G connectivity. QSFP-DD on the host side fans out to four QSFP28 50G CR2 ends for leaf/spine or server aggregation. Direct-attach copper simplifies deployment with ultra-low latency and no optics to manage.

Features

- Simple, low-latency 200G to 4x50G breakout
- Cost-effective alternative to optics for short-reach links
- Passive direct-attach design reduces power and heat
- Standards-based 200GBASE-CR8/50GBASE-CR2 interoperability
- Tool-less deployment and quick turnaround
- Ideal for leaf/spine and server aggregation breakouts

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 active or passive?
A: It is a passive twinax DAC, requiring no power or optics.

Q: What device support is required?
A: Your switch or NIC must support 200G to 4x50G breakout on the QSFP-DD port.

Q: Will this work across different vendors?
A: It follows MSA standards, but some platforms enforce vendor coding. Check your platform’s DAC compatibility policies.

Q: What is the lane mapping?
A: QSFP-DD 8 lanes break out to four 2-lane 50G CR2 links.

Q: What cable gauge is used?
A: Gauge varies by length and design, typically in the 26–30 AWG range for short passive DACs.

Technical Specifications

- Aggregate speed: 200Gbps (breakout to 4x 50Gbps)
- Host interface: QSFP-DD, 8 lanes
- Remote interfaces: 4x QSFP28 50G (CR2, 2 lanes each)
- Ethernet standards: 200GBASE-CR8 and 50GBASE-CR2
- Cable type: Passive twinax, direct-attach copper
- Reach/length: 1 meter
- Latency: Near-zero (no optical conversion)
- Power: No external power; passive cable
- Use case: Break a 200G port into four 50G switch or NIC ports
- Compliance: MSA-compatible coding; device must support 200G→4x50G breakout

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