CBO QSFP28 Direct Attach Copper Cable QSFP-100G-CU2M-HU-BL 2 m 100 Gbit/s

CBO QSFP28 Direct Attach Copper Cable QSFP-100G-CU2M-HU-BL 2 m 100 Gbit/s is a 2-metre passive direct attach copper (DAC) cable engineered for short-reach 100 Gbit/s connections in data center and high-density network environments. The cable uses a QSFP28 form factor on both ends to link compatible QSFP28 ports on switches, routers and network interface cards (NICs). It is intended for reliable, low-latency, and energy-efficient connectivity where fibre transceivers are not required.

Advantages

This QSFP28 DAC cable offers a cost-effective solution for 100 Gbit/s links with lower power consumption compared to active optical solutions. Its passive copper design delivers minimal latency and predictable electrical performance for short distances, simplifying port-to-port connections in rack-to-rack or within-rack deployments. The fixed 2 m length reduces clutter and improves cable management in dense installations.

Suitable for

• Short-reach 100 Gbit/s connections between switches and routers in data centers
• Server to top-of-rack switch interconnects
• Aggregation links and spine-leaf architectures with QSFP28 ports
• High-density rack installations requiring low-latency interconnects

Key specifications

• Form factor: QSFP28 to QSFP28 direct attach copper
• Data rate: up to 100 Gbit/s
• Length: 2 metres
• Cable type: passive copper DAC
• Typical use: short-reach, rack-to-rack or within-rack connections

How to use

Insert each QSFP28 connector into a compatible QSFP28 port until the latch engages. Ensure both network devices are powered and configured for 100 Gbit/s operation and that port presets (speed/auto-negotiation) match. For best results, route the 2 m cable to avoid sharp bends and keep it clear of heat sources or high-interference equipment. Verify link status through the network device management interface after installation.

Recommendations

Use this 2 m QSFP28 DAC cable for short-distance, high-bandwidth links where low latency and power efficiency are priorities. Confirm QSFP28 port compatibility with the device vendor and check firmware settings if the link does not come up. Avoid exceeding bend radius and handle connectors by the housing to prevent contact damage.