• Silver-colored sfp+ transceiver modules with blue handles and metallic connectors for arista 100g qsfp28 dac cable 5m
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Arista

Arista CAB-Q-Q-100G-5M | 100G QSFP28 DAC Cable, Passive Twinax Copper, 5m

Arista CAB-Q-Q-100G-5M | 100G QSFP28 DAC Cable, Passive Twinax Copper, 5m

CAB-Q-Q-100G-5M

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Description

The Arista CAB-Q-Q-100G-5M is a passive 100GBASE-CR4 QSFP28 to QSFP28 direct attach copper (DAC) cable delivering 100 Gbps over 5 metres via four independent 25 Gbps NRZ lanes. Designed for short-reach data centre interconnects, it provides a cost-effective, low-power alternative to optical transceivers for top-of-rack and cross-rack 100GbE deployments in Arista EOS-based environments.

With no active components, the passive twinax design minimises power draw to just 1.5W per end while maintaining low insertion loss and ultra-low crosstalk. Hot-pluggable QSFP28 connectors ensure seamless serviceability without downtime. Compliant with IEEE 802.3, SFF-8662, and QSFP28 MSA (SFF-8665) standards, this cable integrates reliably with any standards-conformant 100G infrastructure. Need it fast? iptrading.com.au delivers across Australia — shop now.

Features

- Passive copper design — no active components, lower power consumption than optical alternatives
- QSFP28 hot-pluggable form factor for enhanced uptime and serviceability
- 4 x 25G NRZ independent transmit/receive signal channels per differential pair
- Cost-effective 100GbE interconnect for top-of-rack and cross-rack data centre deployments
- Low insertion loss and ultra-low crosstalk construction
- Compliant with IEEE 802.3, SFF-8662, and QSFP28 MSA industry standards
- Compatible with Arista EOS-based switches supporting 100G QSFP28 ports
- Available in a range of lengths: 0.5m, 1m, 2m, 3m, and 5m

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-5M
- Data Rate: 100 Gbps (100GBASE-CR4)
- Cable Type: Passive Twinax Copper Direct Attach (DAC)
- Connector Type: QSFP28 to QSFP28
- Cable Length: 5 metres
- Electrical Interface: 4 x 25 Gbps NRZ lanes
- Supply Voltage: 3.3V
- Power Consumption: Max 1.5W per end
- Standards Compliance: IEEE 802.3, SFF-8662, QSFP28 MSA (SFF-8665)
- Operating Temperature: 0°C to 70°C (commercial range)

FAQs

Q: What devices is the CAB-Q-Q-100G-5M compatible with?
A: The CAB-Q-Q-100G-5M is designed for use with Arista EOS-based switches featuring 100G QSFP28 ports, such as the Arista 7050CX3 and 7060CX series. It complies with QSFP28 MSA (SFF-8665) standards, making it broadly compatible with any standards-conformant 100G QSFP28 infrastructure from other vendors as well.

Q: Is this cable active or passive?
A: This is a passive direct attach copper (DAC) cable. It contains no active electronic components, which results in lower power consumption (max 1.5W per end) and higher reliability compared to active optical or active copper alternatives. Passive DAC cables are ideal for short-reach interconnects within or between adjacent racks.

Q: What is the maximum reach of this cable?
A: The CAB-Q-Q-100G-5M supports a reach of 5 metres at 100 Gbps (100GBASE-CR4). For shorter runs, Arista offers this cable in 0.5m, 1m, 2m, and 3m variants. For distances beyond 5m, active optical cables (AOC) or optical transceivers with fibre would be recommended.

Q: How does this cable compare to using 100G optical transceivers?
A: Passive DAC cables like the CAB-Q-Q-100G-5M offer a significantly lower cost per link compared to optical transceivers paired with fibre, and they consume less power. They are the preferred choice for short-reach (up to 5m) rack-to-rack or top-of-rack switch connections where fibre infrastructure is not required.

Q: Can I purchase the Arista CAB-Q-Q-100G-5M in Australia from IP Trading?
A: Yes. IP Trading (iptrading.com.au) is an Australian B2B IT hardware reseller stocking Arista cables and transceivers. We deliver across Australia and can assist with volume orders, compatibility questions, and lead time requirements. Contact our team or purchase directly online.

Q: What warranty is included with this cable?
A: The Arista CAB-Q-Q-100G-5M includes a 1-Year Limited Hardware Warranty covering parts, repair, or replacement with a 10 business day turnaround. Optional Next Business Day and 4-Hour Advance Hardware Replacement support upgrades are also available for organisations requiring faster response SLAs.

Datasheet

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