Cisco

Cisco QSFP-4SFP10-CU0-5 | 40G QSFP+ to 4x10G SFP+ Breakout DAC, Passive Copper, 0.5m

SKU:QSFP-4SFP10-CU0-5

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Description

High-performance passive copper DAC breakout cable for short-reach 40G-to-4x10G connections between TOR switches, servers, and NICs. Zero power, ultra-low latency, and simple plug-and-play deployment.

Features

- 1x40G QSFP+ to 4x10G SFP+ breakout
- Passive DAC for zero power and ultra-low latency
- Ideal for short intra-rack connections (0.5 m)
- MSA-compliant for broad interoperability
- Simple plug-and-play deployment

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: Do the ends include the transceiver interfaces?
A: Yes. The QSFP+ and SFP+ terminations are integrated; no separate optics are required.

Q: Is device breakout support required?
A: Yes. The QSFP+ port must support 4x10G breakout (sometimes labeled as 4x10G or 40G->4x10G).

Q: Active or passive?
A: Passive. It draws no external power and is intended for short intra-rack runs.

Q: Is it vendor locked?
A: It follows MSA specifications; compatibility depends on host port coding and breakout support.

Technical Specifications

- Type: Passive copper direct attach breakout cable
- Interfaces: 1x QSFP+ (40G) to 4x SFP+ (4x10G)
- Aggregate bandwidth: 40 Gbps
- Length: 0.5 m
- Wire: Twinax copper
- Power: 0 W (passive)
- Latency: Near-zero
- Standards: 40GBASE-CR4 and 10GBASE-CR (IEEE 802.3ba)
- MSA compliance: Yes
- Typical use: Switch-to-server or switch-to-switch breakout within rack

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