• Silver-colored sfp+ transceiver modules with blue plastic handles and metallic connectors for arista 100g qsfp breakout cable
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Arista

Arista CAB-Q-2Q-100G-1M | 100G QSFP to 2x 50G QSFP Breakout DAC Twinax Cable, 1M

Arista CAB-Q-2Q-100G-1M | 100G QSFP to 2x 50G QSFP Breakout DAC Twinax Cable, 1M

CAB-Q-2Q-100G-1M

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Description

The Arista CAB-Q-2Q-100G-1M is a 1-metre 100GBASE-CR4 to 2x 50GBASE-CR2 breakout Direct Attach Copper (DAC) twinax cable, purpose-built for high-density data centre interconnects. It splits a single 100G QSFP28 port into two independent 50G QSFP connections, enabling cost-effective server and switch-to-switch cabling without optical transceivers. The passive copper design delivers ultra-low power consumption and minimal latency, making it ideal for top-of-rack and leaf-spine deployments in modern 100G data centres.

Compatible with most Arista switches and supported from EOS version 4.22.1 onwards, this cable complies with MSA open standards for broad interoperability. It is part of Arista's extensive optics and cable portfolio spanning 1G to 400GE. Additional lengths — 2M, 3M, and 5M — are available in the same family for flexible cabling layouts. In stock and ready to ship from iptrading.com.au — order now for fast dispatch.

Features

- Breakout design: one 100G QSFP28 port splits into two independent 50G QSFP connections
- Passive copper construction — no active components, ultra-low power draw
- Cost-effective alternative to optical transceivers for short-reach data centre links
- Compliant with MSA open standards for broad multi-vendor interoperability
- Supported on Arista EOS software version 4.22.1 and above
- Part of Arista's comprehensive 1G to 400GE optics and cable portfolio
- Multiple length options (1M–5M) available for flexible rack-to-rack deployments
- Suitable for top-of-rack, leaf-spine, and high-density 100G data centre architectures

Warranty

Arista hardware products come with a 1-year limited hardware warranty, covering defects in materials and workmanship under normal use.
Extended Warranty Options:
IP Trading offers tailored extended warranty solutions and support packages for Arista products. Contact our team to explore options that align with your organisation's needs.
https://www.arista.com/assets/data/pdf/Warranty.pdf

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Datasheet

Technical Specifications

- Part Number: CAB-Q-2Q-100G-1M
- Cable Type: Passive Twinax Direct Attach Copper (DAC)
- Speed: 100GBASE-CR4 (single QSFP28) to 2 x 50GBASE-CR2 (dual QSFP)
- Connector: QSFP28 (100G end) to 2 x QSFP (50G end) — breakout configuration
- Cable Length: 1 Metre
- Form Factor: QSFP28 breakout
- EOS Software Support: Version 4.22.1 and later
- Standard Compliance: MSA (Multi-Source Agreement)
- Available Lengths: 1M, 2M, 3M, 5M (CAB-Q-2Q-100G-yM family)
- Warranty: 1-Year Limited Hardware Warranty

FAQs

Q: What does the CAB-Q-2Q-100G-1M cable do?
A: It is a 100G to 2x 50G breakout DAC cable that connects a single 100GBASE-CR4 QSFP28 port on a switch to two separate 50GBASE-CR2 QSFP ports, enabling port density doubling without the need for optical transceivers.

Q: Which Arista switches support this cable?
A: This cable is supported on most Arista switching platforms running EOS 4.22.1 or later. Refer to the Arista Transceiver and Cable Guide for specific platform compatibility details.

Q: Is this cable active or passive?
A: The CAB-Q-2Q-100G-1M is a passive copper DAC cable, meaning it requires no power for signal amplification. This results in lower power consumption and lower cost compared to active optical cables or discrete transceivers.

Q: What length options are available in this cable family?
A: The CAB-Q-2Q-100G family is available in 1M, 2M, 3M, and 5M lengths to suit different rack and row cabling distances in data centre environments.

Q: Can I purchase this cable in Australia from IP Trading?
A: Yes. The Arista CAB-Q-2Q-100G-1M is stocked and available for fast dispatch from iptrading.com.au. IP Trading is an Australian B2B IT hardware reseller supplying data centre networking equipment nationwide.

Q: Is this cable compatible with non-Arista switches?
A: The cable complies with MSA open standards, which allows broad compatibility with many third-party QSFP28 platforms. However, Arista formally validates and supports it on their own EOS-based switch portfolio. Always verify compatibility with your specific platform before ordering.

Datasheet

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