BlueOptics MCP7F00-A003R26N-BL InfiniBand fibre optic cable 3 m QSFP28 4xSFP28

The BlueOptics MCP7F00-A003R26N-BL InfiniBand fibre optic cable is a 3 m connection cable with a QSFP28 connector on one end and four SFP28 connectors on the other. Designed for high-speed data transmission in data centres and networking environments, this cable supports 100G applications and provides a compact, rack-ready link between QSFP28 ports and multiple SFP28 ports. The BlueOptics cable is compatible with standard hardware platforms that support QSFP28 to 4xSFP28 connectivity and is intended for short-reach interconnects within racks or between adjacent racks.

Advantages

The cable combines QSFP28 to 4xSFP28 physical interfaces for flexible port breakout and supports multi-protocol use including Ethernet and InfiniBand where the connected equipment supports these modes. With a 3 m length it is suitable for short-distance, high-bandwidth links while maintaining low latency and low power consumption typical of passive twinax-style or direct-attach solutions. Manufacturing follows MSA-compliant designs and uses high-quality components to ensure robust mechanical and electrical performance for continuous operation in data-centre environments.

Suitable for

• Breakout connections from a 100G QSFP28 port to four 25G SFP28 ports
• Short-reach rack-to-rack or intra-rack links in data centres
• High-density switch, router or storage interconnects that support QSFP28 and SFP28
• Environments requiring low-latency, high-throughput InfiniBand or Ethernet links

Key specifications

• Cable length: 3 metres
• Connector types: QSFP28 (one end) to 4 × SFP28 (other end)
• Data rate: supports up to 100 Gbps aggregate (4×25 Gbps lanes)
• Cable gauge: 26 AWG conductor specification for the twinax/direct-attach style
• MSA-compliant mechanical and electrical design
• Passive direct-attach topology suitable for short-distance links

How to use

Install the cable by inserting the QSFP28 plug into the source device’s QSFP28 port and the four SFP28 plugs into the respective SFP28 ports on the destination device. Ensure both devices support QSFP28-to-4×SFP28 breakout mode or the intended protocol (for example, 100GBase-CR4 or 4×25GBASE-CR) and that ports are powered down or meet hot-plugging recommendations from the device manufacturers before insertion or removal. Verify link status and lane mapping in the network equipment management interface after installation.

Usage recommendations

Use this 3 m cable for short, high-bandwidth interconnects inside racks or between adjacent racks. Confirm compatibility with your switch, router or HBA vendor and follow vendor guidance on passive direct-attach cables to ensure correct breakout configuration and optimal performance.