DAC cable CBO SFP28-DAC-1M 1 m passive copper SFP28 to SFP28

CBO SFP28-DAC-1M is a 1 m passive copper direct attach cable with SFP28 connectors on both ends. It is designed for short-range 25GbE or other SFP28-compatible links between switches, routers and servers. The cable delivers a low-latency physical connection without the need for optical transceivers, making it a cost-effective option for rack-to-rack or within-rack interconnects where simple, high-speed copper connectivity is required.

Advantages

The passive 1 m copper design minimizes power consumption and eliminates transceiver compatibility concerns while providing the full electrical performance of SFP28 interfaces. By avoiding optical modules, the cable reduces overall link cost and simplifies installation. Its fixed length and robust SFP28 connectors offer predictable latency and stable signal integrity for short-distance 25GbE links in data center and enterprise environments.

Suitable for

• Short-range 25 Gigabit Ethernet links between switches
• Server-to-switch connections within the same rack
• Inter-rack connections in adjacent racks or cabinets
• High-density top-of-rack deployments requiring low-latency links

Key specifications

• Connector type: SFP28 to SFP28
• Media: passive copper twinax
• Length: 1 meter
• Supported data rates: up to 25 Gbps per lane (25GbE)
• Typical applications: direct-attach short-reach connections
• Physical form: fixed-length cable with integrated connectors

How to use

Insert each SFP28 connector into the corresponding transceiver slot on network equipment until it latches. Ensure both ports are configured for SFP28 passive DAC operation and that link settings (speed/auto-negotiation) match on both devices. No additional power or optical modules are required. For hot-plug capable equipment, the cable can be connected or disconnected while devices are powered, following standard data center procedures and observing anti-static precautions.

Recommendations

Use the cable for short, fixed-length connections where 1 m meets distance requirements. Avoid sharp bends and excessive pulling; maintain manufacturer-recommended bend radius and secure cable routing in racks or trays. Verify compatibility with the SFP28 ports on your switches and servers and confirm link status after installation.