Lenovo 1M 100G QSFP28 to 4×SFP28 Breakout Dac Cable

Overview

The Lenovo 7Z57A03564 is a high-speed copper breakout cable designed to connect a single QSFP28 port to four SFP28 ports, enabling data transfer at 100 Gbps broken out into four 25 Gbps channels. With a 1 meter (3.28 feet) length, it is ideal for short-distance connections within racks or between adjacent racks, providing a clean and efficient cabling solution for data centers. The cable’s passive direct attach design eliminates the need for additional transceivers, simplifying installation and reducing costs.

Key features

• Breaks out one 100 Gbps QSFP28 interface into four separate 25 Gbps SFP28 connections, allowing flexible network configurations.
• Passive direct attach copper cable that delivers reliable signal integrity without requiring extra transceivers.
• Compact 1 meter length supports neat and manageable cabling in dense rack environments.
• Factory-terminated connectors ensure precise and consistent performance for high-speed data transmission.
• Designed specifically for Lenovo networking and compute platforms, ensuring compatibility and ease of deployment.

Key specs

• Cable type: Passive direct attach copper (DAC)
• Length: 1 meter (3.28 feet)
• Interface breakout: 1× QSFP28 to 4× SFP28
• Data rate: 100 Gbps total, split into four 25 Gbps channels
• Standard supported: 100GBase-CU
• Connector termination: Factory-terminated for optimal signal integrity

Connectivity and compatibility

This breakout cable is tailored for use with Lenovo switches and servers that support QSFP28 and SFP28 ports. It enables network administrators to efficiently expand a single 100 Gbps port into multiple 25 Gbps links, which is especially useful in data center environments requiring high-density, high-speed connections. The cable’s passive design means it works without additional power or active components, making it a straightforward choice for in-rack or adjacent rack connections.

Ideal uses and environments

The Lenovo 7Z57A03564 fits well in data centers where space and cable management are critical. It is a strong choice for IT professionals who need to break out high-bandwidth 100 Gbps ports into multiple 25 Gbps links for servers or storage devices. Its short length and passive design make it suitable for rack-to-rack or within-rack connections, helping maintain a tidy and efficient network infrastructure.