SFP28 passive copper direct attach cable CBO SFP28-DAC-1M 1 m

CBO SFP28-DAC-1M is a 1-meter passive copper SFP28 direct attach cable engineered for 25GbE short-reach connections. The assembly provides a fixed copper link that plugs directly into SFP28 ports on switches, network interface cards (NICs) and servers without requiring separate transceivers. Its 1 m length and low-latency electrical connection make it suitable for rack-to-rack and switch-to-server links in data center topologies where space and cost efficiency are priorities.

Advantages

The passive copper construction delivers low latency and predictable signal integrity for short-distance 25GbE links while eliminating the need for optical transceivers and fiber patching. A direct-attach form factor reduces component count and simplifies installation and maintenance. The fixed 1 m length minimizes cable slack in dense rack environments and helps maintain tidy cable management. The cable is a cost-effective option for high-speed interconnects where active electronics and long reach are not required.

Suitable for

• Short-reach 25GbE connections between switches
• Direct server-to-switch links in rack environments
• Top-of-rack (ToR) and adjacent-rack interconnects
• High-density switch clusters and spine/leaf architectures

Key specifications

• Connector type: SFP28 direct attach copper
• Data rate: 25 Gbps per lane (25GbE)
• Length: 1 meter
• Cable type: Passive copper assembly
• Form factor: Dual SFP28 plug ends for hot-pluggable insertion
• Typical use: Short-reach, rack-to-rack and switch-to-server links

How to use

Insert each SFP28 plug into the corresponding SFP28 port on network devices until the latch engages; ensure devices are powered off or that hot-pluggable insertion is supported according to the equipment manufacturer’s guidance. Verify link status and speed in the host device management interface after connection. Use the cable as a fixed point-to-point link; avoid kinking the cable and maintain appropriate bend radius to preserve signal integrity.

Recommendations

For reliable operation, use the cable within its intended 1 m reach and in environments where passive copper assemblies meet electrical and thermal requirements. Confirm device compatibility with SFP28 passive DACs and check firmware or vendor interoperability notes when linking equipment from different manufacturers.