DAC Cable BlueOptics EMC DAC-SFP-25G-5M 5m SFP28 Male/Male

The BlueOptics EMC DAC-SFP-25G-5M is a 5-metre Direct Attach Copper (DAC) cable with SFP28 male connectors at both ends. Designed for short-reach, high-speed links, this DAC cable supports 25 Gbps data rates and is suited for environments where low latency and reliable performance are required. Its fixed copper construction eliminates the need for optical transceivers, providing a cost-effective and energy-efficient connection between switches, servers and network interface cards in rack and row deployments.

Advantages

This BlueOptics DAC cable delivers stable 25 Gbps throughput with low latency and low power consumption compared to optical alternatives. As a pre-terminated twin-axial copper assembly with SFP28 interfaces, it simplifies installation and reduces component count while offering predictable electrical performance for short-distance interconnects. The cable's robust connectors and shielded construction contribute to signal integrity and reduced electromagnetic interference in dense rack environments.

Suitable for

• Connecting SFP28 ports on switches and routers within the same rack or adjacent racks
• Server-to-switch links in data centres requiring 25 Gbps throughput
• Short-reach high-performance computing and storage interconnects
• Applications where low latency and reduced power/heat are priorities

Key specifications

• Connector type: SFP28 male to SFP28 male
• Length: 5 metres
• Supported data rate: 25 Gbps
• Cable medium: Direct Attach Copper (Twinax)
• Typical use: short-reach, within-rack and adjacent-rack connections
• Shielding: shielded construction for EMI protection

How to use

Install the DAC cable by inserting each SFP28 connector into the corresponding SFP28 port on network devices until the latch engages. Verify that both devices support 25 Gbps SFP28 direct-attach connections and check the devices' port LEDs or management interface to confirm link status. Avoid sharp bends and excessive pulling force on the cable; maintain the manufacturer's minimum bend radius to prevent damage to the twinax conductors and shielding.

Recommendations

For reliable operation, use the DAC cable for connections up to 5 metres in rack and adjacent-rack scenarios and confirm compatibility with device vendor requirements. Keep the cable routed to minimize stress on connectors and avoid close proximity to powerful EMI sources. When replacing cables, match the connector type and supported data rate to the equipment specifications.