SFP28 DAC Cable BlueOptics SFP28-DAC-3M-DL 3m Male/Male

The BlueOptics SFP28-DAC-3M-DL is a 3-meter direct attach copper (DAC) cable with SFP28 male connectors on both ends, designed for short-reach 25 Gigabit Ethernet connections. This passive, fixed-length cable enables low-latency, high-throughput links between SFP28 ports on switches, servers and storage devices. Its compact construction and plug-and-play operation make it suitable for dense rack environments and high-performance networking applications.

Advantages

The cable provides a low-cost, low-power alternative to optical transceivers and fiber for short distances, with minimal configuration required. Its direct attach copper design delivers stable signal integrity for 25 Gb/s links, while the standardized SFP28 connectors ensure broad compatibility with SFP28-enabled equipment. The 3 m length reduces clutter while allowing flexible rack-to-rack or within-rack connections.

Suitable for

• Interconnecting SFP28 ports on network switches and servers
• Short-distance links in data center racks and server rooms
• High-density networking setups requiring compact cabling
• Cost-sensitive deployments where fiber transceivers are unnecessary

Key specifications

• Connector type: SFP28 male to SFP28 male
• Length: 3 m
• Supported data rate: 25 Gbit/s
• Cable type: Direct attach copper (DAC), passive
• Typical use: Short-reach rack or chassis connections
• Colour: Black
• Weight: 0.08 kg

How to use

Ensure both devices are powered down or in a hot-pluggable state as specified by the equipment manufacturer, then insert each SFP28 connector into the respective SFP28 port until it clicks. Verify link status on both devices and confirm negotiated speeds and link integrity through switch or server management interfaces. For routine operation, the cable requires no additional drivers or configuration beyond standard network settings.

Recommendations

Use this 3 m DAC cable for short, high-speed connections inside racks or between adjacent racks. Avoid sharp bends and excessive strain on the cable and connectors; maintain bend radii recommended for copper twinax cables. For longer runs or where optical isolation is required, use optical transceivers and fiber instead.