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HPE

HPE JL273A | 100G QSFP28 DAC | 100GBASE-CR4 | passive twinax | QSFP28–QSFP28 | 5m

SKU:JL273A

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Description

Reliable 100G QSFP28 passive twinax DAC for short‑reach, low‑latency connections between switches, servers, and storage up to 5 meters. Reduces power and cost versus optical links while maintaining full 100G throughput over 4x25G NRZ lanes. Verify host support for 5 m passive DAC.

Features

- Economical 100G short-reach interconnect with no optics
- Ultra-low latency and low power
- Secure QSFP28 latching mechanism
- Standards-based 100GBASE-CR4 interoperability
- Pre-tested for signal integrity over 5 m

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 an active or passive DAC?
A: Passive. Ensure your host ports support 5 m passive QSFP28 DAC.

Q: Do I need separate transceivers?
A: No. The QSFP28 interfaces are integrated on the cable ends.

Q: Can it be used as 4x25G breakout?
A: No. This is a straight QSFP28-to-QSFP28 cable.

Q: Any special settings needed?
A: Some platforms require appropriate pre-emphasis/equalization for 5 m passive DAC; consult your switch documentation.

Q: Does it provide diagnostics?
A: Yes, basic EEPROM inventory and link monitoring per SFF-8636 are accessible from the host.

Technical Specifications

- Type: Passive direct-attach twinax copper (DAC) cable
- Data rate: 100 GbE (4x25G NRZ lanes)
- Form factor: QSFP28 on both ends
- Standard: 100GBASE-CR4; IEEE 802.3bj; SFF-8636 management
- Length: 5 meters
- Connectors: QSFP28 plug to QSFP28 plug
- Cable characteristic: Passive, near‑zero latency, low EMI
- Power: Negligible (passive, ~0 W) from the host
- Operating temperature: 0 to 70 °C (typical)
- Compliance: MSA-compliant; RoHS
- Compatibility: QSFP28 100G ports supporting passive CR4 DAC at 5 m (host equalization required)
- Breakout capability: No (straight 1x100G)

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