BlueOptics MCP7F00-A003-BL InfiniBand fibre optic cable 3 m QSFP28 4xSFP28 Male Male

The BlueOptics MCP7F00-A003-BL InfiniBand fibre optic cable is a 3 m QSFP28 to 4xSFP28 male-to-male solution designed for short-distance, high-speed connectivity in racks and adjacent rack rows. It supports 100G aggregated throughput via four 25G lanes and is intended for data center and networking environments that require low-latency links between servers, switches and storage devices. The cable conforms to MSA form factors and is suitable for systems that accept QSFP28 and SFP28 modular ports.

Advantages

This QSFP28 to 4xSFP28 cable provides a compact, low-power connectivity option for 100G applications over a 3 m span. Its passive direct-attach design yields low latency and minimal power consumption while maintaining signal integrity for short-range links. Manufactured to MSA guidelines and assembled using industry-recognized components, the cable is compatible with major hardware platforms that support QSFP28 and SFP28 interfaces.

Suitable for

• High-speed server-to-switch and switch-to-switch links within racks
• Short-range interconnects in data center top-of-rack (ToR) and middle-of-row (MoR) deployments
• Aggregated 100G connections using 4x25G lanes
• Environments requiring low-latency, low-power direct attach connections

Key specifications

• Cable length: 3 metres
• Connector type: QSFP28 (one end) to 4 × SFP28 (other end), male-to-male
• Aggregate data rate: up to 100 Gbit/s (4 × 25 Gbit/s lanes)
• Cable type: passive direct attach (twinax copper for short-range electrical signalling)
• Conductor gauge: 26 AWG
• Form-factor compliance: MSA-compliant QSFP28 and SFP28 interfaces
• Typical applications: Ethernet, FCoE, Fibre Channel and InfiniBand up to 100G over short distances

How to use

Install the cable by inserting the QSFP28 connector into the QSFP28 port and the four SFP28 connectors into their respective SFP28 ports on the connected devices. Ensure ports are powered down or follow hot-plug guidelines from the device manufacturer if applicable. Verify link status and speed in the host or switch management interface after physical connection. Use the cable for short, direct connections — it is designed for up to 3 m copper twinax applications and not for long-distance optical transmission.

Recommendations

For reliable operation, use this cable within rack-to-rack or intra-rack distances up to 3 metres, keep cable bend radius within manufacturer guidelines, and confirm that the target devices support passive DAC twinax attachments. Avoid routing near strong electromagnetic interference sources and check device compatibility when mixing third-party cables and vendor hardware.