Network Cable Amphenol NDAQGF-0002 QSFP28 to 4xSFP28 100G 1m Blue

The Amphenol NDAQGF-0002 QSFP28 to 4xSFP28 100G 1m Blue is a passive direct attach copper (DAC) breakout cable designed for short-reach, high-bandwidth interconnects. It terminates in a QSFP28 connector on one end and four SFP28 connectors on the other, delivering an aggregate data rate of 100 Gbit/s subdivided into four independent 25 Gbit/s channels. This 1-metre cable is intended for point-to-point links inside racks and between adjacent racks where low latency and consistent signal integrity are required.

Advantages

The cable provides a cost-effective and power-efficient solution for 100G connectivity with minimal protocol overhead since it is a passive DAC. Its breakout design simplifies connection between QSFP28 ports and multiple SFP28 ports without additional transceivers. Built with durable shielding and robust housings, the cable maintains reliable electrical performance and low latency in dense data center environments. The fixed 1 m length supports tidy cable management for short-span links.

Suitable for

• Short-reach interconnects between switches, servers and storage in the same rack
• Adjacent-rack links in data center topologies
• High-performance computing clusters requiring 25 Gbit/s lanes
• Switch-to-server breakout scenarios where one 100G port needs four 25G endpoints

Key specifications

• Connector types: QSFP28 to 4 × SFP28
• Aggregate bandwidth: 100 Gbit/s (4 × 25 Gbit/s)
• Length: 1 metre
• Cable type: Passive direct attach copper (DAC)
• Typical applications: Rack and adjacent-rack short-reach links
• Color: Blue

How to use

Insert the QSFP28 plug into the 100G QSFP28 port and each SFP28 plug into the respective 25G SFP28 ports on target devices. Ensure both endpoints are powered down or follow hot-plug procedures recommended by the equipment manufacturer to avoid port damage. Verify link status and port configuration in the switch or host interface; the cable requires no external power or configuration changes beyond standard port settings. Route the cable to avoid sharp bends and maintain minimum bend radius to preserve signal integrity.

Usage recommendations

Use this passive DAC cable for short-distance, high-throughput connections within racks or to adjacent racks. Avoid using for long runs beyond recommended short-reach distances, and keep the cable free from excessive mechanical strain and tight bends. Check device compatibility lists for supported passive QSFP28 to SFP28 breakout connections and confirm port speed and lane mapping before deployment.