DAC cable CBO P5Y0N 30m QSFP28 direct-attach copper cable, 30 m

The BlueOptics DAC cable CBO P5Y0N is a 30 metre QSFP28 direct-attach copper cable designed for short- to mid-range high-speed links between QSFP28 ports. It provides a fixed copper connection for 100 Gigabit Ethernet or other QSFP28-compatible devices in data centre racks and network equipment. The passive copper construction minimises latency and power consumption compared with active optical transceivers where passive direct-attach copper is supported, while delivering the signal integrity required for 100GbE links at this distance.

Advantages

This QSFP28 direct-attach copper cable offers a reliable, low-latency physical connection suited to top-of-rack and adjacent-rack deployments. The 30 m length enables flexible placement of switches and servers without the need for active transceivers or separate fibre patching in short to mid-range scenarios. The fixed copper assembly reduces power and complexity, simplifies inventory and installation, and supports standard QSFP28 port pinouts for straightforward interoperability with compatible equipment.

Suitable for

• 100 Gigabit Ethernet links between QSFP28 ports in data centres
• Top-of-rack and adjacent-rack switch-to-switch or switch-to-server connections
• High-density rack environments where passive copper connectivity is preferred
• Short- to mid-range links where cost, power and latency optimisation is required

Key specifications

• Interface: QSFP28 direct-attach copper
• Length: 30 metres
• Supported data rate: up to 100 Gb/s (QSFP28-compatible)
• Cable type: passive copper assembly
• Typical application: short- to mid-range data centre interconnects

How to use

Install the DAC by inserting each QSFP28 connector into the corresponding QSFP28 port on your network devices, ensuring port orientation and latching are correct. No separate transceivers or fibre patching are required. Verify that connected equipment supports passive QSFP28 direct-attach copper cables and is configured for the intended 100GbE or compatible link speed. Monitor link status indicators on the devices to confirm successful negotiation and operation.

Recommendations

Route the cable with gentle bends and avoid tight radii to preserve signal integrity. Use appropriate cable management to prevent mechanical strain on connectors and to maintain airflow in racks. Confirm compatibility with your hardware vendor documentation for passive QSFP28 DAC usage and any transceiver or port firmware requirements.