• Silver-colored sfp+ transceiver modules with blue handles and metallic connectors in arista 100g qsfp28 dac copper cable
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Arista

Arista CAB-Q-Q-100G-1.5 | 100G QSFP28 DAC Twinax Copper Cable, 1.5m, Passive

Arista CAB-Q-Q-100G-1.5 | 100G QSFP28 DAC Twinax Copper Cable, 1.5m, Passive

CAB-Q-Q-100G-1.5

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Description

The Arista CAB-Q-Q-100G-1.5 is a 100GBASE-CR4 passive Direct Attach Copper (DAC) Twinax cable with QSFP28 connectors on both ends, designed for cost-effective, low-latency 100 Gigabit Ethernet interconnects within and between adjacent racks in data centre environments. Spanning 1.5 metres, it uses four 25G NRZ electrical lanes to deliver full 100G throughput with minimal power draw — ideal for high-density spine-leaf and top-of-rack deployments where short-reach copper is preferred over optical.

The cable is fully compliant with IEEE 802.3 100GBASE-CR4, SFF-8662, and QSFP28 MSA standards, ensuring broad compatibility with Arista switches supporting 100G QSFP28 ports. It also supports backward-compatible 40G connectivity and is hot-pluggable for ease of installation. Supported from EOS 4.15.2 and later, it integrates seamlessly into Arista's ecosystem. Upgrade your network with gear from iptrading.com.au — Australia's IT hardware specialists.

Features

- Passive DAC design delivers low power consumption and ultra-low latency compared to active optical solutions
- Backward compatible with 40G connectivity for flexible deployment across mixed-speed environments
- Hot-pluggable QSFP28 MSA compliant connectors on both ends for tool-free installation
- Supports short-reach interconnects within racks and across adjacent racks in data centre environments
- Compatible with Arista switches supporting 100G QSFP28 ports running EOS 4.15.2 or later
- Part of a complete twinax copper cable family ranging from 0.5m to 5m for varying rack distances
- IEEE 802.3 100GBASE-CR4 compliant for broad interoperability
- No optical components — eliminates fibre handling complexity and reduces total cost of ownership

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-Q-100G-1.5
- Speed: 100GBASE-CR4 (100 Gbps)
- Cable Type: Passive Twinax Copper (DAC)
- Connector Type: QSFP28 to QSFP28
- Cable Length: 1.5 Metre
- Electrical Lanes: 4 x 25G NRZ
- Form Factor: QSFP28 (MSA Compliant)
- Standards: IEEE 802.3 100GBASE-CR4, SFF-8662, QSFP28 MSA
- EOS Software Support: EOS 4.15.2 and later
- Cable Family: CAB-Q-Q-100G-yM (available in 0.5m, 1m, 1.5m, 2m, 2.5m, 5m)

FAQs

Q: What switches is the CAB-Q-Q-100G-1.5 compatible with?
A: This cable is compatible with most Arista switches equipped with 100G QSFP28 ports running EOS 4.15.2 or later, including platforms such as the 7050X, 7060X, 7260X, and 7300X series. Always verify port compatibility with your specific switch model via the Arista transceiver compatibility matrix.

Q: Is this a passive or active DAC cable, and why does it matter?
A: The CAB-Q-Q-100G-1.5 is a passive DAC cable, meaning it contains no active electronic components. This results in lower power consumption, lower latency, and lower cost compared to active cables or optical transceivers, making it the preferred choice for short-reach intra- and inter-rack connections in data centres.

Q: Can this cable be used for 40G connections?
A: Yes. Arista's 100G QSFP28 copper DAC cables support backward compatibility with 40G QSFP+ ports on switches that support mode negotiation, offering flexibility in environments transitioning from 40G to 100G infrastructure.

Q: What is the maximum distance supported by this cable?
A: The CAB-Q-Q-100G-1.5 spans 1.5 metres, suitable for connecting adjacent top-of-rack switches or servers within the same or neighbouring racks. For longer runs, Arista offers cables up to 5 metres in the same family, or active optical cables (AOC) for distances beyond that.

Q: Is this cable available from IP Trading in Australia?
A: Yes. IP Trading (iptrading.com.au) is an Australian B2B IT hardware specialist stocking Arista optics and cabling. Contact the team for pricing, lead times, and volume procurement enquiries for the CAB-Q-Q-100G-1.5 and other cables in the QSFP-to-QSFP twinax family.

Q: What warranty does the Arista CAB-Q-Q-100G-1.5 carry?
A: Arista provides a 1-Year Limited Hardware Warranty covering parts, repair, or replacement with a 10 business day turnaround after receipt. Optional Next Business Day and 4-Hour Advance Hardware Replacement support services are also available for mission-critical deployments.

Datasheet

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