Direct Attach Copper (DAC) Cable CBO JNP-SFP-25G-DAC-1M-BL 1m SFP28 25 Gbit/s

CBO JNP-SFP-25G-DAC-1M-BL is a 1-meter Direct Attach Copper (DAC) cable with SFP28 connectors designed for short-reach interconnects. It supports 25 Gbit/s data rates and is intended for direct connections between SFP28 ports in switches, routers and network interface cards (NICs). The cable offers low latency and reduced power consumption compared with optical transceivers and is suitable for rack-mounted and data centre equipment where a compact, reliable copper link is preferred.

Advantages

The DAC cable provides a cost-effective, energy-efficient solution for short-distance connections, delivering 25 Gbit/s throughput with minimal signal processing and low latency. Plug-and-play SFP28 connectors enable simple installation without additional configuration. Its 1 m length minimises clutter in dense rack environments and supports stable electrical performance for high-speed links.

Suitable for

• Short-reach connections between SFP28 ports on switches and routers
• Direct links from servers or NICs to top-of-rack switches
• Inter-rack connections within a single rack or adjacent racks
• High-density data centre deployments requiring low-latency copper links

Key specifications

• Connector type: SFP28 to SFP28
• Length: 1 metre
• Data rate: 25 Gbit/s
• Cable type: Direct Attach Copper (DAC)
• Latency: low, suitable for high-performance networking
• Compatibility: SFP28 ports on switches, routers and NICs

How to use

Ensure both devices have SFP28 ports and are powered off or operating per the vendor's hot-plug guidance. Align each SFP28 connector with the port and insert until it clicks into place. Verify link status in the device management interface or LED indicators. For safe removal, follow the host equipment procedure to avoid port damage and withdraw the connector using the latch or bail release mechanism.

Recommendations

Use the 1 m DAC cable for short, fixed connections inside racks or between adjacent racks to maintain signal integrity and minimise cable slack. Avoid excessive bending or strain on the cable and route it to prevent interference with airflow in rack units. For distances beyond short-reach limits or where electrical isolation is required, consider optical transceivers and fibre cabling instead.