Network cable CBO 40G-QSFP-QSFP-C-0501-BL 5 m, QSFP+ to QSFP+ 40 Gbit/s, Male–Male

Direct-attach copper network cable CBO 40G-QSFP-QSFP-C-0501-BL, 5 m length, with QSFP+ male connectors at both ends, provides a 40 Gbit/s electrical connection for short-reach links. The cable is intended for high-density environments such as data centers and server rooms, enabling direct QSFP+ to QSFP+ connections between switches, network interface cards (NICs) and transceivers. Its fixed-length twinax design offers predictable signal performance and reduced power consumption compared with active optical solutions for short distances.

Advantages

The cable offers reliable 40 Gbit/s throughput with low latency and error rates, suitable for aggregation layers and spine/leaf topologies. Its passive twinax construction requires no additional power or transceivers, helping to lower total cost of ownership for short interconnects. The 5 m length provides flexibility for rack-to-rack and within-rack cabling while keeping signal integrity within the supported reach of QSFP+ direct-attach links.

Suitable for

• Short-reach connections between switches and top-of-rack or spine devices
• Direct QSFP+ to QSFP+ links for high-speed server uplinks and NICs
• Aggregation, spine/leaf and top-of-rack network deployments in data centers
• Cost-conscious environments that require low-latency copper interconnects

Key specifications

• Data rate: 40 Gbit/s (aggregate)
• Connector type: QSFP+ male to QSFP+ male
• Cable length: 5 meters
• Cable type: Passive twinax copper
• Typical use: Short-reach, within-rack or rack-to-rack interconnects
• Latency: Low, suitable for latency-sensitive applications

How to use

Plug each QSFP+ male connector into the corresponding QSFP+ port on network switches, NICs or transceiver modules. Ensure ports are powered down or follow hot-plug guidance from the equipment vendor if connecting to live systems. Verify link status and speed in the device management interface after connection to confirm 40 Gbit/s operation. Route the cable to avoid sharp bends and maintain recommended bend radius to preserve signal integrity.

Recommendations

Use this direct-attach cable for short, fixed-length links where cost-efficiency and low latency are priorities. Avoid using beyond the recommended reach for passive twinax; for longer distances consider active copper solutions or optical transceivers and fiber. Follow equipment vendor guidelines for supported cable types and firmware compatibility to ensure reliable 40 Gbit/s operation.