• Silver-colored arista H-D400-4Q100-1M sfp+ transceiver modules with blue handles and metallic connectors for 400g active DAC
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Arista

Arista CAB-Q-Q-5M-Arista | 40G QSFP+ Passive DAC Cable, 5m

CAB-Q-Q-5M-Arista

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Description

The Arista CAB-Q-Q-5M is a 5-meter 40G QSFP+ to QSFP+ passive direct attach copper twinax cable designed for high-speed data center and enterprise network interconnects. This cost-effective passive DAC solution delivers 40 Gbps aggregate bandwidth over four lanes, providing reliable connectivity for short-range connections between switches, routers, and storage systems. Ideal for rack-to-rack and top-of-rack deployments where low latency and energy efficiency are critical.

Features

Hot-pluggable QSFP+ connectors for easy installation and maintenance
- Low latency copper twinax design for superior performance
- Energy efficient passive design with minimal power consumption
- Cost-effective alternative to fiber optic transceivers and cables
- MSA compliant for broad interoperability
- Supports 40GBASE-CR4 standard
- Pre-programmed EEPROM for seamless compatibility
- RoHS compliant and environmentally friendly
- Robust construction for data center environments
- No additional power supply required on switch ports

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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Technical Specifications

FAQs

Technical Specifications

Cable Type: Passive Direct Attach Copper (DAC) Twinax
- Data Rate: 40 Gbps aggregate (4 x 10 Gbps lanes)
- Length: 5 meters (16.4 feet)
- Connector Type: QSFP+ to QSFP+
- Cable Gauge: 26-30 AWG
- Power Consumption: Maximum 1.5W
- Power Supply: Single 3.3V
- Operating Temperature: 0°C to 70°C (32°F to 158°F)
- Compliance: QSFP+ MSA, SFF-8436, IEEE 802.3ba, RoHS

FAQs

Q: Is this cable compatible with other vendor equipment?
A: While designed for Arista Networks equipment, many compatible versions are available that work with Cisco, Juniper, Dell, HPE, and other vendors. Check with your supplier for multi-vendor coded options.

Q: What is the difference between passive and active DAC cables?
A: Passive DAC cables like the CAB-Q-Q-5M contain no active electronics and consume minimal power, making them ideal for short distances up to 7 meters. Active cables include signal amplification for longer reaches but consume more power.

Q: Can this cable be used for 4x10G breakout configurations?
A: No, the CAB-Q-Q-5M is a QSFP+ to QSFP+ cable for 40G to 40G connections. For 4x10G breakout, you need the CAB-Q-S series (QSFP+ to 4xSFP+) cable instead.

Q: What is the maximum bend radius for this cable?
A: QSFP+ to QSFP+ copper cables typically have a minimum bend radius of approximately 30-35mm to prevent damage. Avoid sharp bends during installation and cable management.

Q: Does this cable require any special configuration on the switch?
A: No, the cable is plug-and-play. The QSFP+ modules on each end contain EEPROM data that is recognized by compatible switches, enabling automatic configuration and link establishment.

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