SFP28 DAC Cable BlueOptics SFP28-DAC-3M-HU 3m Male Connector

The BlueOptics SFP28-DAC-3M-HU is a 3‑meter SFP28 Direct Attach Copper (DAC) cable with male connectors on both ends. Designed for short-reach, high-bandwidth interconnections, this passive copper cable supports 25 Gigabit Ethernet links between compatible SFP28 ports. Its fixed length and integrated connectors make it a plug-and-play option for top-of-rack switches, servers and SAN equipment where low latency and reliable physical link performance are required.

Advantages

This SFP28 DAC cable delivers low-latency, stable electrical connectivity for 25GbE links while eliminating the need for separate transceivers. Built for short-distance connections, it provides cost-efficient channel establishment with predictable signal integrity and reduced power consumption compared with optical transceivers. The robust housings on the male connectors simplify insertion and removal in dense rack environments and help maintain consistent physical contact over repeated use.

Suitable for

• Short-reach server-to-switch connections in data centers
• Top-of-rack and middle-of-row interconnects
• Storage area network (SAN) links and high-performance compute clusters
• Laboratory or test environments requiring reliable 25GbE links

Key specifications

• Connector type: SFP28 male connectors on both ends
• Cable type: Direct Attach Copper (passive DAC)
• Length: 3 meters
• Data rate support: 25 Gigabit Ethernet
• Typical use: short-distance rack-level interconnects

How to use

Ensure both networking devices have compatible SFP28 ports that support direct attach copper modules. With devices powered down or operating per your maintenance policy, align the cable connectors with the SFP28 slots and insert until the latch engages. Verify link status through device indicators or management interfaces and confirm negotiated speed is 25GbE. To remove, release the connector latch and pull straight out to avoid bending the cable or stressing connector housings.

Recommendations

For reliable performance, route the cable to avoid tight bends and sources of electromagnetic interference. Use this DAC for rack-level connections up to 3 meters; for longer distances or isolated runs consider active copper or optical solutions. Regularly inspect connector contacts and housings for damage and replace the cable if mechanical wear or connectivity issues appear.