CBO QSFP 40 Gbit/s copper cable 1 m, model 40G-QSFP-QSFP-C-0101-BL

Direct-attach copper cable CBO QSFP 40 Gbit/s, model 40G-QSFP-QSFP-C-0101-BL, is a 1 m passive copper link designed for 40 Gbit/s QSFP ports. It provides a reliable electrical connection between compatible QSFP-enabled devices and supports low-latency, short-reach interconnects commonly used in data centre and rack-level networking. The cable is intended for direct QSFP-to-QSFP connections without optical transceivers and is compatible with equipment that accepts QSFP passive copper assemblies.

Advantages

This 1 m QSFP copper cable offers cost-effective connectivity for short-distance links and reduces power consumption compared with optical solutions since no transceivers are required. The passive construction ensures minimal signal processing latency and stable throughput at 40 Gbit/s. Its compact form factor simplifies cable management in dense switch and server racks while delivering predictable electrical characteristics for reliable performance in high-density environments.

Suitable for

• Server-to-switch short-reach connections in data centres
• Switch-to-switch links within the same rack or adjacent racks
• Aggregation and top-of-rack connectivity where 40 Gbit/s ports are available
• Environments requiring low-latency, cost-effective copper interconnects

Key specifications

• Data rate: 40 Gbit/s
• Connector type: QSFP to QSFP (direct-attach copper)
• Cable length: 1 m
• Transmission medium: Passive copper twinax
• Typical use: Short-reach, rack-level interconnects

How to use

Insert each QSFP connector into the corresponding QSFP port on the devices to be linked, ensuring proper alignment and a secure connection. Verify that both devices support passive QSFP copper assemblies and configure the network interfaces according to your equipment vendor’s instructions. Monitor link status LEDs and operating system network interfaces to confirm the 40 Gbit/s link has been negotiated and is stable. For any firmware or compatibility limitations, consult the hardware documentation of the connected devices.

Recommendations

Use this 1 m passive QSFP copper cable for short, direct connections within the same rack or adjacent racks. Avoid tight bends and excessive strain on the cable; maintain recommended bend radius and secure the cable to prevent movement. For longer distances or when electrical compatibility issues arise, consider using optical transceivers with appropriate fibre cabling.