InfiniBand/fibre optic cable Cisco SFP-H25G-CU2.5M= 2.5 m

The Cisco SFP-H25G-CU2.5M= is a 2.5 m InfiniBand/fibre optic cable equipped with SFP28-compatible connectors on both ends. Designed for use in high-bandwidth networking environments, this cable supports reliable, low-latency data transfer between switches, routers and servers. Its compact form factor and fixed 2.5 m length make it suitable for short-reach connections inside racks and across adjacent equipment bays.

Advantages

This cable delivers consistent high-speed connectivity with minimized signal attenuation and reduced latency compared with longer or mixed-media links. The SFP28-compatible ends enable direct connection to compatible transceiver ports without adapters, simplifying installation and reducing points of failure. The 2.5 m length balances flexibility and cable management in dense data center racks while maintaining predictable electrical performance.

Suitable for

• Direct server-to-switch connections in rack environments
• Switch-to-switch links within the same rack or adjacent racks
• High-bandwidth, low-latency clusters and storage networks
• Short-reach interconnects in data centers and server rooms

Key specifications

• Cable type: InfiniBand / fibre optic compatible direct attach with SFP28-style connectors
• Length: 2.5 meters
• Connector type: SFP28-compatible on both ends
• Typical use: Short-reach, high-bandwidth interconnects
• Physical form: Fixed-length cable designed for rack and cabinet installations

How to use

Install the cable by inserting each SFP28-compatible connector into the corresponding SFP28-capable port on networking equipment until the connector latches. Ensure ports are powered down or follow hot-swap guidelines from your equipment vendor if applicable. Route the cable to avoid sharp bends and secure it with existing cable-management hardware to maintain signal integrity and airflow. Verify link status and speed on both devices after insertion and adjust interface settings if required by your network configuration.

Recommendations

Use this 2.5 m InfiniBand/fibre optic cable for consistent short-reach connections where predictable latency and throughput are required. Avoid exceeding the minimum bend radius, and keep the cable away from sources of electromagnetic interference and excessive heat. For mixed-length or longer runs, choose cables or transceivers specified for longer distances and different media types.