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Aruba

Aruba R4G18A | 25Gb SFP28 DAC Twinax, 0.5m passive, 25GBASE-CR, low-power, hot-swappable

SKU:R4G18A

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Description

Direct Attach Copper cable for short, low-latency interconnects between SFP28 25GbE switch and server ports. Passive Twinax design minimizes power consumption and cost versus optical transceivers for in-rack links up to 0.5 m. Ideal for dense top-of-rack deployments.

Features

- Cost-effective 25GbE interconnect versus optical modules
- Ultra-low latency and power consumption
- Hot-swappable SFP28 ends for quick maintenance
- Robust passive Twinax build for reliable in-rack links
- MSA-based form factor for broad platform support

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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FAQs

Technical Specifications

FAQs

Q: Is this cable active or passive?
A: It is a passive Twinax DAC; no active components are in the cable.

Q: What is the maximum supported distance?
A: 0.5 meters, suitable for adjacent or same-rack connections.

Q: Does it support 10G operation?
A: Many SFP28 ports can negotiate 10G with DACs, but fallback support depends on the host port’s capabilities.

Q: Can I mix vendors on each end?
A: Interoperability depends on the switch/server port coding policies; check your platform’s DAC compatibility.

Q: What are typical use cases?
A: Top-of-rack switch to server NIC, or short switch-to-switch interconnects within the same rack.

Technical Specifications

- Form factor: SFP28 to SFP28
- Data rate: up to 25 Gbps per channel
- Cable type: Passive Twinax Direct Attach Copper (DAC)
- Length: 0.5 m
- Standard: 25GBASE-CR
- Power: ultra-low (passive), host-powered
- Hot-swap: supported in compatible SFP28 ports
- Typical applications: in-rack switch-to-server or switch-to-switch links
- Compliance: RoHS

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