Arista

Arista CAB-Q-4S-100G-3M | 100G QSFP28 to 4x25G SFP28 DAC, 100GBASE-CR4/25GBASE-CR, 3m twinax breakout

Arista CAB-Q-4S-100G-3M | 100G QSFP28 to 4x25G SFP28 DAC, 100GBASE-CR4/25GBASE-CR, 3m twinax breakout

SKU:CAB-Q-4S-100G-3M

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Description

High-density breakout DAC for splitting one 100G QSFP28 port into four 25G SFP28 links over low-latency twinax copper. Ideal for TOR and spine–leaf architectures where short-reach, cost-effective connectivity is required.

Features

- Cost-effective 100G-to-4x25G breakout
- Ultra-low latency passive copper link
- Tool-less, integrated direct-attach connectors
- Reduced power and EMI versus optical links
- Standards-based interoperability

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: Can this cable split a single 100G port into four 25G ports?
A: Yes, provided the switch/NIC supports 100G to 4x25G breakout (CR4 to CR).

Q: Is the cable passive or active?
A: It is a passive twinax DAC.

Q: Does it require special coding to work?
A: It follows QSFP28/SFP28 MSA and IEEE CR standards; device compatibility and breakout support are required.

Q: What environments is it best suited for?
A: Short-reach, in-rack or adjacent-rack connections in data center and campus fabrics.

Technical Specifications

- Interface: QSFP28 to 4x SFP28 (breakout)
- Aggregate speed: 100GbE (4x25GbE lanes)
- Standards: 100GBASE-CR4 and 25GBASE-CR (IEEE 802.3bj/by)
- Cable type: Passive twinax copper
- Length: 3 meters
- Connector plating: QSFP28 and SFP28 integrated direct-attach ends
- Low latency, low power, low EMI
- MSA compliant; breakout support required on host ports
- Typical operating temperature: 0°C to 70°C
- Use case: In-rack and adjacent-rack short-reach links

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