CBO QSFP28 DAC cable MCP7F00-A03AR26L-BL 100 Gbit/s, 5 m

BlueOptics CBO QSFP28 DAC cable MCP7F00-A03AR26L-BL 100 Gbit/s, 5 m is a Direct Attach Copper (DAC) cable with QSFP28 connectors designed for short-reach 100 Gbit/s links. The pre-terminated twinax assembly provides a fixed, low-latency copper connection over 5 metres, allowing direct 100G connectivity between compatible QSFP28 ports without the need for optical transceivers. The cable is intended for high-density networking environments such as top-of-rack switches, aggregation layers and server interconnects where cost-effective and power-efficient cabling is required.

Advantages

The DAC cable offers low latency and reduced power consumption compared with optical transceiver-based links, as no separate transceivers are required. Its pre-terminated QSFP28-to-QSFP28 design simplifies installation and minimizes potential points of failure. The 5 m length supports typical short-reach data centre layouts while maintaining signal integrity and consistent 100 Gbit/s performance. Constructed for robust rack-to-rack and switch-to-server connections, it is a practical option for environments prioritising density and predictable electrical performance.

Suitable for

• Top-of-rack switch to aggregation switch connections
• Server to switch high-speed uplinks
• Short-reach data centre interconnects and appliance links
• High-density blade and rack environments requiring 100G copper cabling

Key specifications

• Interface: QSFP28 to QSFP28
• Data rate: 100 Gbit/s
• Media type: Direct Attach Copper (twinax)
• Length: 5 metres
• Transmission range: short-reach, up to 5 m
• Connector orientation: fixed, pre-terminated
• Typical applications: server uplinks, switch interconnects, data centre links

How to use

Install the cable by inserting each QSFP28 connector into the corresponding QSFP28 port on devices powered down or meeting hot-plug guidance from the equipment manufacturer. Ensure connectors are fully seated and latches engage. Verify that both devices support passive or active QSFP28 DAC connections and configure port settings on switches or servers as required for 100 Gbit/s operation. Cable routing should avoid tight bends and mechanical strain; secure the cable to rack structures if needed to prevent movement during maintenance.

Recommendations

For optimal performance, use this 5 m QSFP28 DAC within the same rack or adjacent racks with compatible QSFP28 ports and validated firmware. Avoid exceeding the specified bend radius, protect the connectors from dust and contaminants when not in use, and consult switch or server vendor documentation for supported DAC cable types and port configuration guidance.