• Silver-colored arista CAB-Q-Q-0.5 sfp+ transceiver modules with blue handles and metallic connectors for 40gbe passive twinax dac cable
1 1

Arista

Arista CAB-Q-Q-0.5 | 40GbE QSFP+ to QSFP+ Passive Twinax DAC Cable, 0.5m

Arista CAB-Q-Q-0.5 | 40GbE QSFP+ to QSFP+ Passive Twinax DAC Cable, 0.5m

CAB-Q-Q-0.5

Stock Status: Enquire

$0.00 AUD
$0.00 AUD
$0.00 AUD
Sale Stock Status: Enquire
Taxes included. Shipping calculated at checkout.

Description

The Arista CAB-Q-Q-0.5 is a 40GBASE-CR4 passive direct attach copper (DAC) cable delivering 40 Gb/s over a 0.5-metre twinax assembly with QSFP+ connectors on both ends. Designed for ultra-short-reach data centre interconnects, it provides a cost-effective, low-latency alternative to optical transceivers for top-of-rack, intra-rack, and adjacent-rack switch-to-server connections. With no active components and a maximum power draw of just 1.5W per end, it minimises heat and energy consumption in high-density deployments.

Compliant with QSFP+ MSA, SFF-8436, IEEE 802.3, and RoHS standards, this cable supports both 40GbE and QDR InfiniBand applications, making it broadly interoperable across Arista, and multi-vendor environments. The hot-pluggable QSFP+ form factor enables easy installation without powering down equipment. Need it fast? iptrading.com.au delivers across Australia — shop now.

Features

- Passive copper design — no active components, reduced power consumption and heat output
- Hot-pluggable QSFP+ form factor on both ends for tool-free installation
- Supports 40GbE and QDR InfiniBand applications for flexible deployment
- Low-latency direct attach connection — ideal for latency-sensitive workloads
- Optimised for top-of-rack (ToR), intra-rack, and adjacent-rack server-to-switch cabling
- Part of a full QSFP+ twinax cable family ranging from 0.5m to 5m
- SFF-8436 compliant for broad multi-vendor interoperability
- RoHS compliant for use in environmentally regulated deployments

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.

View full details

specs-tabs

Technical Specifications

FAQs

Datasheet

Technical Specifications

- Part Number: CAB-Q-Q-0.5M
- Standard: 40GBASE-CR4
- Connector Type: QSFP+ to QSFP+ (both ends)
- Cable Type: Passive Twinax Copper
- Cable Length: 0.5 metre (1.6 ft)
- Data Rate: 40 Gb/s
- Cable Gauge: AWG30
- Form Factor: QSFP+ DAC
- Supply Voltage: 3.3V
- Power Consumption: Max 1.5W per end
- Operating Temperature: 0°C to 70°C
- Compliance: QSFP+ MSA, SFF-8436, QDR InfiniBand, IEEE 802.3, 10GE/40GE, RoHS

FAQs

Q: What is the maximum supported distance for the CAB-Q-Q-0.5?
A: This cable supports a reach of 0.5 metres (1.6 ft), making it ideal for connecting adjacent devices within the same rack or directly neighbouring racks in a data centre.

Q: Is this cable compatible with non-Arista switches and servers?
A: Yes. The CAB-Q-Q-0.5 is compliant with the QSFP+ MSA and SFF-8436 standards, providing broad interoperability with equipment from multiple vendors. However, some vendors may require vendor-coded or programmed cables — confirm compatibility with your specific hardware before ordering.

Q: Does this cable require any power or transceivers to operate?
A: No. This is a passive direct attach copper (DAC) cable with no active components. It draws a minimal 1.5W per end from the host port and requires no separate transceivers or power supply.

Q: Can I use this cable for InfiniBand as well as Ethernet?
A: Yes. The CAB-Q-Q-0.5 supports both 40GbE and QDR InfiniBand applications, making it suitable for high-performance computing (HPC) and storage networking environments in addition to standard data centre Ethernet use cases.

Q: Can I purchase the Arista CAB-Q-Q-0.5 in Australia from IP Trading?
A: Yes. IP Trading (iptrading.com.au) is an Australian B2B IT hardware reseller stocking Arista DAC cables with fast delivery across Australia. Contact us or order online for competitive pricing and prompt dispatch.

Q: Are there longer length options available in the same cable family?
A: Yes. Arista offers a full range of QSFP+ twinax copper cables from 0.5m up to 5m in the same product family. If you need a longer reach, additional SKUs are available — contact IP Trading for details.

Datasheet

This product has a detailed PDF datasheet available. Open PDF datasheet in a new tab .

Your browser can’t display the embedded PDF. Click here to open it in a new tab.

Recently Viewed

  • Request for a Quote

    Looking for competitive pricing? Submit a request, and our team will provide a tailored quote that fits your needs.

  • Contact Us Directly

    Have a question or need immediate assistance? Call us for expert advice and real-time support.

    Call us Now  

  • Contact Us Directly

    Have a question or need immediate assistance? Call us for expert advice and real-time support.

    Contact us