BlueOptics Q28-AOC-7M-PT-BO InfiniBand fibre optic cable 7m OM3

The BlueOptics Q28-AOC-7M-PT-BO InfiniBand fibre optic cable 7m OM3 is an active optical cable (AOC) with QSFP28 connectors at both ends, designed for short-distance, high-speed data links inside racks or between adjacent racks. It uses OM3 multimode fibre with a 50 µm core diameter and integrates I/O and O/E conversion in the transceiver housings to provide 100GBASE-SR4 compatible optical transmission. The cable features a flame-resistant LSZH sheath and a slim, flexible construction that reduces weight and improves bend radius compared with equivalent direct-attach twinax solutions.

Advantages

This QSFP28 to QSFP28 active optical cable delivers reliable 100 Gbps-class performance while keeping signal conversion and testing integrated at the factory. The OM3 multimode core and the built-in optical transceivers provide stable throughput for high-performance computing and data centre links. The LSZH outer jacket reduces smoke and halogen emissions in case of fire, and the smaller diameter and greater flexibility simplify routing in dense cabling environments.

Suitable for

• Short-reach 100G data centre connections within or between adjacent racks
• High-performance computing clusters and InfiniBand interconnects
• Switch-to-switch, server-to-switch and top-of-rack connections using QSFP28 ports
• Environments requiring flame-retardant, low-smoke cabling (LSZH)

Key specifications

• Cable type: Active Optical Cable (AOC)
• Length: 7 m
• Connector type: QSFP28 to QSFP28 (hot-pluggable transceiver housings)
• Fibre type: OM3 multimode
• Core diameter: 50 µm
• Data rate compatibility: 100G (100GBASE-SR4 and InfiniBand high-speed links)
• Sheath material: LSZH (low smoke zero halogen), flame resistant
• Bend radius and flexibility: improved vs. direct-attach twinax solutions

How to use

Insert each QSFP28 transceiver end into matching QSFP28 ports on switches, servers or NICs until the connector latches. The built-in electrical-to-optical and optical-to-electrical conversion is performed within the transceiver housings, so no separate modules or additional configuration are required for basic link establishment beyond standard port setup. Ensure both endpoints support QSFP28 and the required 100G or InfiniBand protocol, then verify link status via device LEDs or management interfaces. Handle the cable by the connectors and avoid tight bends; follow the equipment vendor guidelines for hot-plugging if performed while systems are powered.

Recommendations

For reliable operation, route the BlueOptics Q28-AOC-7M-PT-BO to avoid pinch points and maintain a bend radius larger than the manufacturer’s minimum. Use this AOC for short-reach 100G links where reduced weight and improved flexibility are needed compared with twinax DACs. Confirm device compatibility with QSFP28 ports and 100GBASE-SR4 or InfiniBand standards before installation and inspect connectors for contamination prior to insertion.