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HPE

HPE 845416-B21 | 100Gb→4x25Gb Breakout DAC | 3m | QSFP28↔4xSFP28 | 100GBASE-CR4/25GBASE-CR | Passive Copper

SKU:845416-B21

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Description

Passive copper breakout cable for short‑reach 100G to 4×25G fan‑out connections. Ideal for connecting a 100G QSFP28 uplink to four 25G SFP28 access ports with ultra‑low latency and zero power.

Features

- Cost-effective 100G to 4×25G breakout with zero power
- Ultra-low latency passive copper design
- 3 m reach tailored for in-rack fan-out wiring
- MSA compliance for broad device interoperability
- Robust shielding for reduced EMI in dense racks

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: Will this passive DAC work on any QSFP28 port?
A: Most QSFP28 ports support 100G→4×25G breakout when enabled. Ensure your switch/adapter supports breakout mode and any required vendor coding.

Q: What is the recommended use case for 3 m length?
A: Short in-rack or adjacent-rack runs where minimal latency and cost are priorities.

Q: Does this cable require FEC?
A: Passive copper links may benefit from FEC depending on port capability and link quality; FEC is configured on the host ports.

Q: Is this cable active or passive?
A: It is a passive DAC—no electronics, no power draw.

Q: Can I mix it with AOCs in the same chassis?
A: Yes. As long as each port’s media type is supported, mixing DAC and AOC in the same system is common.

Technical Specifications

- Aggregate rate: 100 Gbps (fan-out to 4×25G)
- Form factor: QSFP28 to 4×SFP28
- Cable type: Passive Copper DAC
- Length: 3 m
- Connectors: QSFP28 male ↔ 4× SFP28 male
- Standards: 100GBASE-CR4 and 25GBASE-CR; MSA compliant (SFF-8665, SFF-8402)
- Power: No external power (passive cable)
- Latency: Near-zero added latency
- EMI: Shielded copper construction
- Operating temperature: 0°C to 70°C (typical)
- RoHS compliant

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