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Arista

Arista CAB-S-S-25G-3M-Arista | 25G SFP28 Passive DAC Cable, 3m

CAB-S-S-25G-3M-Arista

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Description

The Arista CAB-S-S-25G-3M is a 25GBase-CU passive direct attach copper (DAC) twinax cable designed for high-speed, short-reach connectivity in data center environments. Featuring SFP28 connectors on both ends, this 3-meter cable provides cost-effective 25G Ethernet connections between switches, servers, and storage devices within or between adjacent racks. The passive copper design eliminates the need for external power while delivering reliable performance for 25G and 10G applications.

Features

Passive copper twinax construction for cost-effective 25G connectivity
- SFP28 MSA compliant connectors with EEPROM for host system compatibility
- Dual-rate support for 25G and 10G Ethernet applications
- Low power consumption with no external power required
- Hot-pluggable design for easy installation and maintenance
- RoHS compliant and environmentally friendly
- Suitable for short-reach connections within racks or between adjacent racks
- Compliant with IEEE P802.3by Ethernet standard and SFP28 MSA specifications

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: 25GBase-CU Passive Direct Attach Copper (DAC) Twinax
- Connector Type: SFP28 to SFP28
- Cable Length: 3 meters (9.8 feet)
- Data Rate: 25.78 Gbps (25G) and 10.31 Gbps (10G)
- Wire Gauge: 24-26 AWG
- Maximum Power Consumption: 0.5-0.57W per end
- Supply Voltage: 3.3V
- Operating Temperature: 0°C to 70°C
- Compliance: IEEE P802.3by, SFP28 MSA (SFF-8402, SFF-8432), RoHS, CE

FAQs

Q: What is the maximum distance supported by this cable?
A: The CAB-S-S-25G-3M is a 3-meter passive copper cable designed for short-reach connections within a rack or between adjacent racks in data centers.

Q: Can this cable support 10G speeds?
A: Yes, this cable supports dual-rate operation and can run at both 25G (25.78 Gbps) and 10G (10.31 Gbps) depending on the port configuration.

Q: Is this cable compatible with other vendors' equipment?
A: While designed for Arista switches, compatible third-party versions are available that work with other vendors' SFP28 ports. Always verify compatibility with your specific switch model before deployment.

Q: Does this cable require external power?
A: No, this is a passive DAC cable that draws minimal power (0.5-0.57W per end) directly from the host equipment and does not require external power supplies.

Q: What are the advantages of DAC cables over optical transceivers?
A: DAC cables offer lower cost, lower power consumption, and reduced latency compared to optical transceivers for short-distance connections, making them ideal for intra-rack and inter-rack connectivity in data centers.

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