QSFP28 DAC Cable BlueOptics QSFP28-DAC-2M-BC 2m Male Connector

The BlueOptics QSFP28-DAC-2M-BC is a 2‑metre direct attach copper (DAC) cable with QSFP28 male connectors on both ends, designed for high-speed, short-reach interconnects. It is intended for use in dense networking environments where reliable, low-latency links are required for switches, routers, network interface cards and high-performance computing equipment. The cable supports the electrical interface and form factor of QSFP28 connections while maintaining a compact, easy-to-route profile.

Advantages

This QSFP28 DAC cable offers a fixed-length, low-power interconnect solution that eliminates the need for separate transceivers and optical modules. Its copper construction provides predictable latency and signal integrity for short distances, and the integrated QSFP28 male connectors simplify installation. The 2 m length balances rack-to-rack reach with manageable cable routing and reduced clutter compared with longer assemblies.

Suitable for

• High-density data center switch-to-switch or switch-to-server connections
• High-performance computing clusters and blade server interconnects
• Top-of-rack and middle-of-row networking installations
• Short-reach, high-bandwidth links in enterprise and carrier equipment

Key specifications

• Cable type: Direct Attach Copper (DAC)
• Connector type: QSFP28 male on both ends
• Length: 2 m
• Intended reach: short-reach interconnects within racks or between adjacent racks
• Application: 100 Gb/s class high-density interconnects
• Construction: shielded copper assembly for signal integrity

How to use

Verify compatibility of QSFP28 ports on the devices to be connected and ensure both ends are powered down or follow hot-plug guidelines from the equipment manufacturer. Insert the QSFP28 connectors firmly into the corresponding ports until the latching mechanism engages. Route the cable to avoid sharp bends and sources of electromagnetic interference, and secure it using cable management supports to prevent strain on connectors. If replacing an existing link, confirm network settings and link status after installation.

Recommendations

Use this 2 m QSFP28 DAC cable for short-distance, high-throughput links inside racks or between adjacent racks. Avoid extending beyond intended short-reach distances and maintain recommended bend radius to preserve performance. Follow vendor compatibility lists when deploying in production networks to ensure full functionality.