SFP28 Direct Attach Cable BlueOptics 25GBASE-CR, 1 m, copper

The BlueOptics SFP28 Direct Attach Cable 25GBASE-CR, 1 m, is a passive copper twinax cable in SFP28 form factor designed for short-range 25 Gbps links. It connects compatible SFP28 ports on servers, switches or network adapters, offering a compact and cost-efficient alternative to optical transceivers for short interconnects. The cable supports the 25GBASE-CR standard and is intended for reliable, low-latency data transmission in data center and enterprise rack environments.

Advantages

This 1 m SFP28 DAC provides low latency and stable signal integrity for short-distance 25 Gbps connections while eliminating the need for separate optical modules and fiber patch cords. The integrated SFP28 form factor simplifies installation and reduces space usage in dense rack deployments. Using passive copper construction keeps power consumption and overall cost lower than active optical solutions for comparable short-reach links.

Suitable for

• Server-to-switch connectivity within the same rack or adjacent racks
• Switch-to-switch stacking or short fabric links in data centers
• High-throughput, low-latency applications such as virtualization hosts and storage nodes
• Environments where cost-efficient 25 Gbps short-reach links are required

Key specifications

• Data rate: 25 Gbps (25GBASE-CR compliant)
• Form factor: SFP28 twinax direct attach
• Medium: Passive copper twinax
• Length: 1 meter
• Connector type: SFP28 male ends for hot-pluggable port insertion
• Typical use: Short-range, rack-level interconnects

How to use

Power down is not required for insertion or removal in most systems; insert each SFP28 end into the corresponding 25G SFP28 port until it clicks into place and ensure both ends are fully seated. Verify link lights or management interfaces on connected devices to confirm a successful connection. For removal, depress the module latch and pull the cable straight out to avoid stressing ports. Follow vendor compatibility guidance for device-specific interoperability.

Usage recommendations

Use this 1 m SFP28 DAC for short, direct connections inside racks or between adjacent racks. Avoid bending the cable sharply near the connector ends and maintain recommended port airflow and cooling. Confirm compatibility with switch and server vendor compatibility lists before deployment.