SFP28 DAC Cable BlueOptics SFP28-DAC-0.5M-IT 0.5m Male Connector

The BlueOptics SFP28-DAC-0.5M-IT is a 0.5 m direct attach copper (DAC) cable with SFP28 male connectors on both ends. Designed for short-reach, high-speed interconnects in data centers and network racks, this cable supports reliable 25Gb/s links with low latency and reduced power consumption compared with active optical alternatives. The compact twinax construction and fixed length make it suitable for connecting switches, servers and NICs in stacked or adjacent rack units.

Advantages

This SFP28 DAC cable delivers predictable electrical performance for 25GbE connections while avoiding the need for separate transceiver modules and patch cords. Its passive design simplifies deployment and reduces power draw. The 0.5 m length minimizes signal loss for short hops and helps maintain clean cable management in dense rack environments. The integrated SFP28 male connectors ensure a secure, hot-pluggable interface compatible with SFP28 ports.

Suitable for

• Short-reach links between switches, servers and storage within the same rack or adjacent racks
• 25 Gigabit Ethernet top-of-rack and leaf-spine network fabrics
• High-density environments where low latency and low power are required

Key specifications

• Cable type: Direct attach copper (twinax)
• Connector type: SFP28 male on both ends
• Nominal length: 0.5 m
• Data rate support: up to 25 Gbit/s per lane (25GbE applications)
• Weight: 0.08 kg
• Colour: Black

How to use

Insert each SFP28 connector into the corresponding SFP28 port on your network devices until the latch engages. Ensure devices are powered and support DAC connections at the intended data rate. Verify link status through device management interfaces and adjust interface settings (speed, duplex, auto-negotiation) if required. For best results, use this cable for direct connections over short distances inside cabinets or between neighboring racks.

Recommendations

Avoid excessive bending or kinking of the twinax cable and maintain recommended bend radius. Keep the cable away from sources of mechanical strain and ensure secure routing to prevent accidental removal. Confirm compatibility with your switch or server vendor’s supported DAC list when operating in environments that enforce vendor lock-in or firmware checks.