CBO DAC SFP28 Mellanox MCP2M00-A001 1m Passive Twinax Cable

CBO DAC SFP28 Mellanox MCP2M00-A001 1m Passive Twinax Cable is a 1 metre direct attach copper (DAC) cable designed for short-range 25GbE and compatible high-speed connections. The passive Twinax construction connects SFP28 ports on switches, network interface cards (NICs) and routers without the need for external power or active components. This cable targets reliable, low-latency links in rack-to-rack and top-of-rack installations where short-distance, cost-efficient copper interconnects are required.

Advantages

The passive Twinax design provides low latency and low power consumption compared with active optical transceivers, while maintaining stable signal integrity for short links. Being a direct attach solution, the cable offers a straightforward plug-and-play installation without additional modules or transceivers. Its 1 m length is suited to dense rack environments and reduces excess cable slack, improving airflow and cable management.

Suitable for

• 25 Gigabit Ethernet interconnects between switches and top-of-rack devices
• Direct connections between NICs and adjacent servers or storage appliances
• Short-range links in data centre racks where cost and power efficiency are priorities
• High-performance computing clusters requiring low-latency connectivity

Key specifications

• Interface: SFP28 to SFP28 compatible with Mellanox SFP28 ports
• Length: 1 metre
• Cable type: Passive Twinax direct attach copper
• Supported data rate: 25 Gbps per lane (25GbE link)
• Application: Short-range rack-to-rack and top-of-rack interconnects
• Power: Passive (no external power required)
• Latency: Low-latency physical connection for short distances

How to use

Install the cable by inserting each SFP28 connector into the corresponding SFP28 port on the devices to be linked, ensuring connectors click into place and latch properly. Confirm that the devices support 25GbE operation and are configured for the intended link settings. No external power or transceiver modules are necessary; the cable operates passively. After physical installation, verify link status and speed through device management interfaces and monitor for stable connectivity.

Usage recommendations

For best results, use the 1 m passive Twinax cable for connections within the same rack or between adjacent racks. Avoid bending the cable beyond the manufacturer’s recommended minimum bend radius and keep it clear of sharp edges and high-heat components. Use appropriate cable management to prevent strain on the SFP28 connectors and ensure proper airflow in high-density installations.