• Arista 200G QSFP-DD to 4x50G QSFP DAC breakout cable, 2.5m
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Arista

Arista CAB-D-4Q-200-2.5 | 200G DAC breakout | QSFP-DD→4×50G QSFP | 200GBASE-CR8/50GBASE-CR2 | passive twinax | 2.5m

CAB-D-4Q-200-2.5

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Description

Compact 200G passive DAC breakout that splits one QSFP-DD 200G port into four 50G QSFP ports, enabling efficient short-reach copper connectivity for edge, TOR, or aggregation layers with breakout support.

Features

- Efficient 1:4 breakout from a single 200G port
- Low-latency, low-power copper for in-rack links
- Secure, tool-free QSFP-DD/QSFP latching
- Shielded twinax for signal integrity and reduced EMI
- Ideal for server and edge aggregation fan-outs

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

FAQs

Technical Specifications

- Cable type: Direct Attach Copper (Twinax), passive
- Aggregate speed: 200 Gb/s
- Breakout: 1× QSFP-DD (200G) to 4× QSFP (50G each)
- Standards: 200GBASE-CR8 at QSFP-DD end; 50GBASE-CR2 at QSFP ends
- Lane mapping: 8 lanes total → 4×(2 lanes)
- Reach: 2.5 meters
- Connectors: QSFP-DD (host) to 4× QSFP (remote)
- Power: Passive (no active components)
- Use case: Short-distance 200G to 4×50G fan-out in rack

FAQs

Q: Is this an active cable?
A: No, it is a passive twinax DAC.

Q: Do I need optics at the ends?
A: No, the connectors are integrated; no separate optics are required.

Q: What is the cable length?
A: 2.5 meters.

Q: What devices will it work with?
A: Hosts must provide QSFP-DD/QSFP ports that support 200G→4×50G breakouts and DAC operation.

Q: Does it support link training/FEC?
A: Yes, via the host ports per the 200GBASE-CR8/50GBASE-CR2 specifications.

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