• HPE Aruba R4G19A 25G SFP28-to-SFP28 DAC 1m green white logo
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Aruba

Aruba R4G19A | 25G SFP28-to-SFP28 DAC | 1m passive | 25GBASE-CR | reach 1m | direct-attach twinax

R4G19A

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Description

High-performance 25G direct-attach copper cable for short-reach top-of-rack connections between SFP28 switch and server ports. Passive twinax construction delivers ultra-low latency and near-zero power draw for dense deployments. Ideal for cost-effective 25GbE links within the rack.

Features

- Ultra-low latency and near-zero power
- Cost-effective 25GbE short-reach connectivity
- Tool-less, hot-pluggable SFP28 endpoints
- Robust twinax design for reliable intra-rack cabling

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

- Data rate: 25Gbps (SFP28)
- Length: 1 meter
- Type: Passive direct-attach copper (Twinax)
- Standard: 25GBASE-CR (IEEE 802.3by)
- Connectors: SFP28 to SFP28
- Reach: 1m within-rack
- Power: Passive (no external power)
- Compatibility: 25GbE SFP28 switch/NIC ports supporting DAC

FAQs

Q: Is this cable passive or active?
A: It is a passive twinax direct-attach copper cable.

Q: Will this work in any SFP28 port?
A: It is designed for SFP28 ports that support 25G DAC; check device compatibility and DAC support policies.

Q: Can it be used at 10Gbps?
A: Some devices support downshifting, but DAC fallback to 10G is platform-dependent. Verify with your switch/NIC documentation.

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