Network Cable MaxLink ML-DAC28+1 SFP28 DAC Passive 1m Black

The MaxLink ML-DAC28+1 SFP28 DAC Passive 1m Black is a 1-metre passive direct attach copper cable compatible with SFP28 ports and designed for 25G Ethernet links. This MaxLink 25G SFP28 DAC cable provides low-latency, short-reach connectivity for switch-to-switch, switch-to-server and server-to-server interconnects in data center and enterprise networking environments. The cable incorporates Digital Diagnostic Monitoring (DDM) to report real-time operating parameters and supports industry-standard SFP28 form-factor electrical interfaces.

Advantages

The passive SFP28 DAC design delivers a low-cost, energy-efficient alternative to active optical modules for short-distance connections while maintaining 25G performance. Built with robust copper conductors and standardized SFP28 connectors, this cable offers stable signal integrity and low insertion loss. Integrated DDM enables monitoring of parameters such as temperature and voltage, which simplifies troubleshooting and network management. The 1 m length and compact, black jacket make routing and rack cabling straightforward in dense equipment layouts.

Suitable for

• 25 Gigabit Ethernet switch-to-switch links in data centers
• Server to top-of-rack or leaf switch connections
• High-density rack interconnects and short-reach aggregation links
• Environments requiring DDM monitoring for diagnostics

Key specifications

• Form factor: SFP28 direct attach copper (DAC) passive
• Data rate: 25 Gbps per channel (25G Ethernet)
• Length: 1 metre
• Connector type: SFP28 electrical connectors on both ends
• Monitoring: Digital Diagnostic Monitoring (DDM) support
• Cable jacket: black, flexible copper assembly suitable for short-reach
• Typical use: short-reach intra-rack and adjacent-rack connections

How to use

Install the MaxLink SFP28 DAC by inserting each SFP28 connector into the corresponding SFP28 slot until it clicks into place. Ensure both network ports are powered down or support hot-plug insertion according to the switch or server vendor guidelines. Verify that the connected devices are configured for 25G Ethernet operation and allow the link to initialize; DDM values can be checked through the device management interface for operational parameters. To disconnect, release the retention mechanism on each connector and withdraw the cable carefully to avoid stressing the ports.

Usage recommendations

Use this passive SFP28 DAC for short-distance, high-throughput links within racks or between adjacent racks. Avoid routing the cable near high-power or high-interference sources, and maintain bend radii recommended by equipment manufacturers to preserve signal integrity. For longer distances or cross-datacenter links, consider optical transceivers and fiber cabling instead of passive copper DACs.