DAC cable CBO SFP28-DAC-2M 2 m passive SFP28 twinax for 25Gbps connections

CBO SFP28-DAC-2M is a 2-meter passive DAC (Direct Attach Copper) cable with SFP28 connectors engineered for 25Gbps network links. The twinax copper assembly provides a direct electrical connection between SFP28 ports on switches, servers or network interface cards (NICs), enabling short-reach, low-latency links suitable for data center topologies and rack-to-rack interconnects. The cable is intended for environments where cost-efficient, reliable 25Gbps connectivity is required without the need for optical transceivers.

Advantages

The passive twinax construction delivers low power consumption and minimal signal processing, resulting in reduced latency compared with active or optical alternatives. With fixed SFP28 form-factor connectors and a compact, flexible jacket, the cable supports high-density installations and straightforward plug-and-play operation. Its 2 m length is optimized for short links within racks or between adjacent racks, providing predictable electrical performance for 25Gbps links.

Suitable for

• Short-reach links between top-of-rack switches and servers
• Interconnects in data center racks and adjacent rack connections
• High-density switch to switch uplinks where 25Gbps bandwidth is required
• Systems and NICs with SFP28 ports supporting copper DACs

Key specifications

• Connector type: SFP28 male on both ends
• Length: 2 meters
• Data rate: up to 25 Gbps per link
• Cable type: passive twinax copper
• Use case: short-reach, direct attach copper interconnect
• Form factor: SFP28 compatible for high-density ports

How to use

Insert each SFP28 connector into the corresponding SFP28 port on the two devices to be linked, ensuring the latch engages to secure the connection. Confirm both devices are configured for 25Gbps operation and that the ports accept passive DAC modules. No additional transceivers or fiber patching is required. For best signal integrity, avoid sharp bends and maintain the cable’s minimum bend radius during installation. After connection, verify link status and throughput using the devices’ management interfaces.

Recommendations

Use this 2 m passive SFP28 twinax cable for short-distance, cost-sensitive 25Gbps connections inside racks or between adjacent racks. Ensure compatibility with your switch or NIC vendor’s supported list for passive DACs and follow standard ESD handling practices during installation.