CBO SFP28-DAC-1M Passive Copper DAC Cable 1 m 25 Gbps SFP28

The CBO SFP28-DAC-1M Passive Copper DAC Cable 1 m 25 Gbps SFP28 is a factory-terminated direct-attach cable designed for short-reach high-speed connections in data centres and server rooms. This 1 metre passive copper assembly supports 25 Gbps signalling over SFP28 interfaces and provides a compact, low-latency alternative to optical modules for top-of-rack and row-level interconnects. The cable features fixed ends for plug-and-play installation between switches, network interface cards and compatible transceivers.

Advantages

This passive DAC cable delivers reliable 25 Gbps throughput with minimal latency and reduced power consumption compared with active or optical solutions for the same short distances. Factory termination ensures consistent electrical performance and eliminates the need for field crimping or termination. The compact SFP28 form factor and fixed 1 m length simplify cable management in dense rack environments and enable quick, tool-free deployment for standard copper direct-attach links.

Suitable for

• Top-of-rack and end-of-row switch-to-switch connections
• Server NIC to switch direct links in data centres
• Short-reach interconnects inside racks and between adjacent racks
• High-density switching environments where low latency and low power are required

Key specifications

• Length: 1 metre
• Data rate: 25 Gbps
• Interface: SFP28 to SFP28
• Type: Passive copper direct-attach cable (DAC)
• Termination: Factory-terminated fixed ends
• Typical use: Short-reach intra-rack and inter-rack connections

How to use

Install the cable by inserting each SFP28 connector into the corresponding SFP28 port on your switch, NIC or transceiver until the latch engages. Ensure both endpoints support 25 Gbps passive copper links and confirm port configuration and speed settings in your networking equipment if necessary. No additional power or external transceivers are required; the assembly is ready for immediate use once connected. For removal, release the connector latches and pull the cable straight out to avoid stressing the ports.

Recommendations

Use this 1 m passive DAC cable for short, fixed-length connections where cost-efficiency, low latency and low power are priorities. Avoid running the cable in high-vibration or electrically noisy environments and maintain bend radii recommended by the equipment manufacturer to preserve signal integrity.