DAC Cable BlueOptics MCP7F00-A002R-BL 2m QSFP28 to 4x SFP28

The BlueOptics MCP7F00-A002R-BL is a 2m passive DAC cable with a QSFP28 connector on one end and four SFP28 connectors on the other, designed for short-distance, high-speed interconnects in racks and between neighboring racks. Compliant with MSA connector standards, this twinax copper solution supports aggregated 100G data links (4x25G) and provides a low-latency, low-power connection for compatible switches, routers and storage systems. The cable is constructed for reliable signal transmission in data center and networking environments and is intended for use where passive QSFP28-to-4xSFP28 connectivity is required.

Advantages

The DAC cable offers direct attach performance with low latency and low power consumption typical of passive twinax designs. Its 2-metre length is suitable for short reach top-of-rack and adjacent-rack connections, reducing the need for transceivers and fiber patching. Tested for compatibility with common hardware platforms, the cable uses standard QSFP28 and SFP28 interfaces to simplify installation and interoperability. Durable construction and industry-grade components contribute to extended service life and stable long-term operation.

Suitable for

• Top-of-rack and adjacent-rack 100G connections
• High-density switch-to-switch interconnects
• Server to top-of-rack switch links supporting 4x25G channels
• Short-reach storage system connections and SAN uplinks

Key specifications

• Cable type: passive twinax Direct Attach Cable (DAC)
• Length: 2 m
• Connector A: QSFP28
• Connector B: 4 × SFP28
• Data rate: aggregated 100G (4×25G)
• Typical use: short-reach rack/inter-rack connections
• Colour: Black
• Weight: 0.25 kg

How to use

Install the QSFP28 end into a compatible QSFP28 port and plug the four SFP28 ends into the corresponding SFP28 ports on the target device. Ensure that the connected hardware supports passive DAC twinax cables and the 4×25G channel aggregation required for 100G operation. Observe proper handling to avoid sharp bends or kinks in the cable; secure routing within the rack to prevent strain on connectors. No external power or configuration is required for the cable itself, but verify link status and port configuration on the connected devices after installation.

Recommendations

Use this 2 m passive QSFP28 to 4×SFP28 DAC for reliable short-distance 100G interconnects where low latency and low power consumption are priorities. Confirm device compatibility and port settings with your switch or server vendor documentation before deployment, and avoid extended bend radii or tight cable ties to preserve signal integrity.