InfiniBand cable CBO CAB-Q28-Q28-3M-BL QSFP28 to QSFP28, 3 m, blue

Direct-attach InfiniBand cable CAB-Q28-Q28-3M-BL with QSFP28 connectors on both ends and a 3 m length provides a fixed, low-latency connection for server, switch and storage interconnects. The cable is designed for high-speed environments such as data centers and high-performance computing clusters, offering a straightforward point-to-point link that integrates with equipment that supports QSFP28 ports. Its passive construction simplifies installation and eliminates the need for transceivers, while the blue jacket enables easy visual identification within rack cabling.

Advantages

The passive QSFP28-to-QSFP28 design delivers consistent signal integrity and minimal latency for short-reach links. A 3-metre length balances reach and cable management inside racks and between adjacent equipment. The cable’s fixed-configuration lowers component count and reduces potential points of failure compared with transceiver-based links. The colored jacket and standardized QSFP28 terminations support quick identification and compatibility with compatible InfiniBand and Ethernet equipment that accept QSFP28 passive direct-attach cables.

Suitable for

Key specifications

How to use

Install by seating each QSFP28 connector into the corresponding QSFP28 port on the devices to be interconnected. Ensure that ports are powered down or follow the equipment vendor’s hot-plug guidance when inserting or removing the cable. Route the cable to avoid sharp bends and mechanical strain, and secure it within the rack to maintain airflow. Verify link status and negotiated speed on both endpoints after connection to confirm proper operation.

Recommendations

Use this 3 m passive QSFP28 cable for short-reach, high-throughput links inside racks or between adjacent racks. Check device compatibility with passive QSFP28 direct-attach cables and follow vendor guidance on supported cable types and maximum distances for InfiniBand or Ethernet operation.