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Arista

Arista CAB-Q-Q-100G-2M-Arista | 100G QSFP28 to QSFP28 Passive DAC Cable, 2m

CAB-Q-Q-100G-2M-Arista

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Description

The Arista CAB-Q-Q-100G-2M is a 2-meter 100G passive direct attach copper twinax cable with QSFP28 connectors on both ends. Designed for cost-effective, low-latency interconnects between switches, routers, and servers within racks or across adjacent racks, this cable delivers reliable 100 Gigabit connectivity using passive copper technology. Compliant with QSFP28 MSA, IEEE 802.3, and SFF-8665 standards, it is ideal for data center and enterprise network deployments.

Features

Low insertion loss and ultra-low crosstalk for reliable signal integrity
- Hot-pluggable design for easy installation and maintenance without network downtime
- Passive copper technology eliminates power consumption and heat generation
- Cost-effective solution for short-distance 100G interconnects within and between racks
- QSFP28 MSA compliant for multi-vendor interoperability potential
- Fully compliant with IEEE 802.3 Ethernet standards and SFF-8665 specifications
- Enables high port density and configurability in data center environments
- Pre-programmed EEPROM for plug-and-play operation with Arista platforms
- Robust twinax construction for durability in high-density rack environments
- Lower latency compared to optical transceiver solutions

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: 100G QSFP28 to QSFP28 Passive Direct Attach Copper (DAC) Twinax
- Cable Length: 2 meters (6.6 feet)
- Connector Type: QSFP28 (Quad Small Form-factor Pluggable 28) on both ends
- Data Rate: 100 Gbps
- Cable Gauge: 26 AWG
- Compliance: IEEE 802.3, SFF-8662, SFF-8665, QSFP28 MSA
- Technology: Passive copper, no external power required
- Operating Temperature: 0°C to 70°C (commercial grade)
- Hot-pluggable: Yes
- Compatible Platforms: Arista switches and routers with QSFP28 ports

FAQs

Q: What is the difference between passive and active DAC cables?
A: Passive DAC cables like the CAB-Q-Q-100G-2M use copper conductors without signal amplification, making them cost-effective and power-efficient for short distances up to 5 meters. Active DAC cables include signal boosting circuitry for longer reaches but consume more power and cost more.

Q: Is this cable compatible with other vendors' equipment?
A: This cable is coded specifically for Arista Networks equipment. While physically compatible with standard QSFP28 ports, vendor-specific EEPROM coding may require reconfiguration or compatible mode support on non-Arista devices. Contact your vendor to confirm cross-platform compatibility.

Q: Can I use this cable for 40G connections?
A: No, this is a 100G QSFP28 cable designed for 100 Gigabit Ethernet connections. While QSFP28 ports may support backward compatibility with 40G QSFP+ modules in some cases, this cable is optimized and rated for 100G operation only.

Q: What is the maximum safe bend radius for this cable?
A: Twinax DAC cables should maintain a minimum bend radius of approximately 35mm during installation to prevent signal degradation and physical damage to the internal conductors. Avoid tight bends or kinks when routing cables.

Q: Does this cable support breakout configurations?
A: No, the CAB-Q-Q-100G-2M is a direct QSFP28 to QSFP28 cable without breakout capability. For breakout applications, consider Arista's QSFP28 to 4x SFP28 or QSFP28 to 2x QSFP28 breakout cables such as the CAB-Q-4S-100G series.

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