CBO DAC SFP28 JNP-SFP-25G-DAC-2M 2 m direct attach copper cable SFP28 25Gb/s

The CBO DAC SFP28 JNP-SFP-25G-DAC-2M is a 2 metre passive direct attach copper (DAC) twinax cable designed for short-reach 25Gb/s connections between network devices. Intended for use with SFP28 ports, this cable delivers a fixed, low-latency physical link suitable for data centre top-of-rack connections, switch-to-switch uplinks and server interconnects where cost-effective, power-efficient cabling is required.

Advantages

This SFP28 DAC cable offers a compact, electrically direct connection that eliminates the need for separate transceivers, reducing both power consumption and overall port cost. The 2 m length supports common rack layouts while maintaining signal integrity for 25Gb/s links. Passive construction makes it simple to deploy and maintain, and the twinax design provides stable, low-latency performance for latency-sensitive applications.

Suitable for

• Short-reach connections between switches in the same rack or adjacent racks
• Top-of-rack (ToR) uplinks in data centres
• Direct server-to-switch or server-to-server interconnects with SFP28 ports
• High-density network deployments requiring low-power cabling

Key specifications

• Connector type: SFP28 on both ends
• Data rate: 25 Gb/s per port
• Cable type: Passive twinax copper
• Length: 2 metres
• Use case: Short-reach data centre and rack-level links
• Latency: Low, fixed electrical path suitable for time-sensitive traffic

How to use

Insert each SFP28 connector into the corresponding SFP28 port on the devices to be connected until the latch clicks into place. Verify link status through the device management interface and ensure both ports are configured for 25Gb/s operation if manual configuration is required. For removal, press the release mechanism on the connector and gently extract the cable. Handle connectors by the housing and avoid bending the cable sharply near the ends to preserve signal integrity.

Recommendations

Install the cable in rack environments that keep device distances within the 2 m effective range and avoid routing near high-power electrical equipment to minimise interference. Confirm compatibility with switch and server vendor port policies for passive DACs and ensure firmware supports 25Gb/s SFP28 connections. Store unused cables coiled loosely and protect connector ends from dust when not in use.