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Arista

Arista CAB-S-S-25G-1M-Arista | 25G SFP28 Passive DAC Cable, 1m, Twinax Copper

CAB-S-S-25G-1M-Arista

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Description

The Arista CAB-S-S-25G-1M is a 25GBase-CU passive direct attach copper (DAC) cable designed for high-performance, cost-effective connectivity within data centers and equipment racks. This 1-meter SFP28 to SFP28 twinax cable supports 25 Gigabit Ethernet and is ideal for short-reach connections between switches, servers, and storage devices. It operates over passive copper, requires no external power, and is MSA-compliant for broad interoperability with 25G network infrastructure.

Features

25GBase-CU passive direct attach copper cable for high-speed, low-latency connectivity
- Supports data rates up to 25 Gbps with backward compatibility for 10G Ethernet
- SFP28 to SFP28 twinax design for short-reach connections up to 1 meter
- Passive copper construction requires no external power or cooling
- Low power consumption (max 0.57W per end) for energy-efficient operation
- MSA-compliant (SFF-8402, SFF-8432, SFF-8431) for broad interoperability
- RoHS-compliant and environmentally friendly
- Operates in commercial temperature range (0°C to 70°C)
- Cost-effective alternative to optical transceivers for short distances
- Low insertion loss and low crosstalk for reliable signal integrity
- Hot-pluggable for easy installation and maintenance

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 SFP28 to SFP28 Passive Direct Attach Copper (DAC) Twinax
- Cable Length: 1 meter (3.3 feet)
- Data Rate: Up to 25 Gbps (supports 25G Ethernet and 10G Ethernet)
- Wire Gauge: AWG 24 or AWG 30 (passive copper)
- Connector Type: SFP28 on both ends
- Power Supply: 3.3V
- Power Consumption: Maximum 0.57W per end
- Operating Temperature: 0°C to 70°C (commercial temperature range)
- Compliance: MSA SFF-8402, SFF-8432, SFP+ MSA SFF-8431, RoHS compliant
- Maximum Reach: 1 meter over passive copper

FAQs

Q: What is the CAB-S-S-25G-1M used for?
A: The CAB-S-S-25G-1M is a 25G passive DAC cable used for short-reach, high-speed connections between network switches, servers, and storage devices within racks or across adjacent racks in data centers. It provides a cost-effective alternative to optical transceivers for distances up to 1 meter.

Q: Is this cable compatible with 10G Ethernet equipment?
A: Yes, the CAB-S-S-25G-1M supports dual-rate operation and can be used with 10G Ethernet equipment. Arista's 25G twinax copper cables are designed to support both 10G and 25G data rates, providing backward compatibility with 10G SFP+ ports.

Q: Does this cable require external power or cooling?
A: No, the CAB-S-S-25G-1M is a passive copper cable that does not require external power or active cooling. It draws minimal power (max 0.57W per end) from the host equipment, making it an energy-efficient and low-maintenance connectivity solution.

Q: What switches and platforms support this cable?
A: This cable is designed for use with Arista switches and network adapters that feature 25G SFP28 ports. It is fully compatible with Arista's 25G-capable platforms and interoperates with industry-standard 25G SFP28 equipment that meets MSA specifications.

Q: Can I use this cable in high-density environments?
A: Yes, the compact SFP28 form factor and 1-meter length make this cable ideal for high-density rack environments. Its passive copper design reduces heat output and power consumption compared to active cables, making it suitable for densely populated switch deployments.

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