Network Cable Lenovo B4QQ QSFP56 Direct Attach Cable 200G Twinaxial Copper Blue

The Lenovo B4QQ QSFP56 Direct Attach Cable 200G Twinaxial Copper Blue is a passive high-speed interconnect designed for short-reach links in data center and rack environments. Featuring QSFP56 connectors on both ends, this twinax copper cable supports 200 Gigabit data transfer with low latency and is intended for direct attachment between switches, servers, and network adapters within the same rack or adjacent racks. The blue jacket provides clear visual identification in cabling runs.

Advantages

This direct attach cable delivers reliable 200G performance with minimal power consumption due to its passive twinax design. The QSFP56 connector interface ensures compatibility with equipment that accepts QSFP56 form-factor modules, offering low insertion loss and stable signal integrity across short distances. The cable's robust copper conductors and molded connectors are engineered for repeated insertions and secure mechanical fit, while the colored jacket helps maintain organized cable management.

Suitable for

• High-density switch-to-switch connections within a rack
• Server-to-switch connections in data centers
• Interconnects between network adapters and top-of-rack switches
• Short-reach links in high-performance computing clusters

Key specifications

• Data rate: 200 Gbit/s
• Connector type: QSFP56 on both ends
• Cable medium: Twinaxial copper
• Form factor: Direct attach passive cable
• Color: Blue jacket for identification
• Typical reach: short-reach interconnects (rack/adjacent racks)

How to use

Connect each QSFP56 connector to the corresponding QSFP56 port on your network devices, ensuring the connector latches engage and the cable is routed to avoid sharp bends. Use this cable for direct-attached links where short copper runs meet your bandwidth and latency requirements. Verify device compatibility with QSFP56 passive twinax cables and check port settings and firmware if link negotiation is required.

Usage recommendations

For optimal performance, keep cable runs within recommended short-reach distances, avoid tight bends and mechanical strain, and maintain good airflow around connected equipment. Confirm that connected devices support passive QSFP56 twinax connections and that firmware versions are up to date to ensure stable 200G operation.