Direct Attach Cable (DAC) CBO Mellanox MCP2104-X005B 10Gbps, 5 m

Passive Direct Attach Cable (DAC) CBO Mellanox MCP2104-X005B 10Gbps, 5 m is a fixed-length twinax copper assembly designed for short-range 10Gbps connections between servers, switches and storage devices. The cable offers a low-latency physical link with a 5 metre reach, suitable for top-of-rack and adjacent-rack interconnects in data centre environments. It supports standard 10 Gigabit Ethernet signalling over a robust, energy-efficient twinax construction that eliminates the need for separate transceivers for short links.

Advantages

This 5 m passive DAC provides a straightforward, cost-effective way to connect compatible 10Gbps ports while reducing power consumption compared with optical transceivers and separate fibre cables. Its fixed-length twinax design ensures predictable electrical performance and minimal latency, making it appropriate for latency-sensitive applications. The cable’s integrated connectors simplify installation and reduce component count in rack deployments.

Suitable for

• Top-of-rack server to switch connections in data centres
• Switch-to-switch links within the same or adjacent racks
• Direct server-to-storage appliance links requiring 10Gbps bandwidth
• Short-distance connectivity where energy efficiency and low latency are priorities

Key specifications

• Nominal data rate: 10 Gbps
• Cable type: Passive twinax copper
• Length: 5 metres
• Connector type: Fixed, compatible with Mellanox 10Gbps ports
• Use case: Short-range direct attach interconnect
• Latency: Low, suitable for latency-sensitive links

How to use

Plug each integrated connector into the corresponding 10Gbps port on the devices to be linked, ensuring a secure seating and alignment to the port guide. No additional transceivers or external power are required for passive operation. After installation, verify link status on both devices and configure network settings as needed to enable 10Gbps operation and desired network features such as VLANs or link aggregation.

Recommendations

For reliable performance, use this 5 m passive DAC for connections within the same rack or adjacent racks where the 5 m length is appropriate. Avoid sharp bends, excessive pulling force, or kinking of the cable; maintain minimum bend radius as recommended by the equipment vendor. Confirm port compatibility and firmware recommendations of connected devices before deploying in production.