Direct Attach SFP28 Cable CBO SFP28-DAC-5M-LO-BL 5 m Male-to-Male 25Gbit/s

CBO SFP28-DAC-5M-LO-BL is a 5 metre direct-attach twinax cable with SFP28 male connectors at both ends, engineered to carry 25 Gbit/s signals for short-range interconnects. The assembly integrates cable and connectors into a single, fixed link that eliminates separate optical transceivers, offering a compact, low-latency connection between switches, routers and network interface cards in data centre and high-performance networking environments.

Advantages

The twinax construction and integrated SFP28 connectors provide a cost-effective and power-efficient 25 Gbit/s connection with predictable latency and signal integrity across the 5 metre reach. Being a direct-attach cable, it reduces component count and simplifies installation while maintaining compatibility with SFP28 ports designed for DACs. The fixed-length assembly offers stable performance with minimal configuration compared to separate transceiver and fibre or active copper assemblies.

Suitable for

• Short-reach interconnects between rack switches and top-of-rack switches
• Direct connections from switches to servers or NICs requiring 25 Gbit/s links
• High-density data centre cabling where low power and reduced heat are priorities
• Cost-sensitive deployments that prefer fixed, low-complexity links over transceiver-based optics

Key specifications

• Connector type: SFP28 male-to-male twinax
• Data rate: up to 25 Gbit/s
• Length: 5 metres
• Cable type: passive twinax direct-attach
• Typical use: short-range copper interconnect for 25G networks

How to use

Insert each SFP28 connector into the corresponding SFP28 port on networking equipment until the latch engages. Verify that both devices support direct-attach twinax connections at 25 Gbit/s to ensure link negotiation. The cable requires no separate power or configuration; once physically connected and recognized by the devices, the link will operate as a fixed 25G channel. Handle the connectors by their housings and avoid excessive bending of the cable near the terminations to maintain signal integrity.

Recommendations

Install the cable in clean, low-interference rack environments and keep bend radius within manufacturer guidelines. Use for distances up to 5 metres in intra-rack or short inter-rack connections, and confirm device compatibility with passive twinax DACs to ensure optimal performance and link stability.