CBO Fortinet SFP28-DAC-1M passive 1 m copper DAC SFP28 cable for 25Gbps ports

The CBO Fortinet SFP28-DAC-1M passive 1 m copper DAC SFP28 cable is a 1‑metre twinax copper assembly engineered for direct 25Gbps connections between compatible SFP28 ports. Designed for short-reach links, this cable provides a compact, low-latency physical layer connection without requiring separate optical transceivers. Its construction suits high-density rack-to-rack and switch-to-switch installs in data centers and server rooms where reliable, cost-effective 25Gbps connectivity is needed.

Advantages

This passive SFP28 DAC cable offers reduced latency and lower power consumption compared with optical transceivers because it uses direct electrical twinax. The 1 m length minimizes signal loss over short distances and simplifies cable management in dense rack environments. Compatibility with Fortinet-style SFP28 ports and other devices supporting SFP28 passive DACs ensures plug-and-play installation and consistent 25Gbps throughput for local interconnects.

Suitable for

• Short-reach rack-to-rack connectivity in data centers
• Switch-to-switch high-speed links at 25Gbps
• Server to top-of-rack switch connections
• Environments where low latency and low power are priorities

Key specifications

• Interface type: SFP28 to SFP28 passive twinax copper
• Nominal data rate: 25Gbps
• Cable type: Twinax copper (passive)
• Length: 1 metre
• Typical application: Short-reach interconnects (rack-to-rack, switch-to-switch)
• Latency profile: Low latency, suitable for latency-sensitive links
• Power characteristics: Passive (no active electrical components requiring power)

How to use

Insert each SFP28 connector into the appropriate SFP28 slot on the two devices to be linked, ensuring the connectors engage firmly and the retention latches click into place. Verify that both devices are configured for 25Gbps operation and that any port-level settings (such as speed, duplex, or auto-negotiation) match. Monitor link status indicators on devices after insertion; a stable link light indicates the connection is established. For removal, depress the latch and pull the module straight out to avoid damaging the connector or port.

Recommendations

Use this 1 m passive DAC for short, direct connections inside racks or adjacent racks. Avoid routing the cable near high-power electrical sources or tight bends that exceed the manufacturer’s minimum bend radius. For longer runs or environments requiring optical isolation or higher reach, consider optical transceivers and fibre cabling instead.