DAC Cable CBO 100G-Q28-Q28-C-0501 100G QSFP28 Direct Attach Copper 0.5 m Blue

CBO DAC Cable 100G-Q28-Q28-C-0501 100G QSFP28 Direct Attach Copper 0.5 m Blue is a short-reach copper interconnect designed for 100 Gigabit QSFP28 ports. The cable provides a direct electrical connection between compatible switches, servers and network appliances, delivering 100G data transfer rates with minimal latency. The 0.5 m length fits dense rack environments and the blue jacket simplifies identification and cable management in data centers.

Advantages

The direct attach copper design eliminates the need for separate optical transceivers, reducing component count and power consumption while keeping total link cost low. The QSFP28 connectors and assembly are engineered to support full 100G signaling with low insertion loss and predictable electrical performance. The short 0.5 m length minimizes signal degradation and is suited to top-of-rack and adjacent-rack connections. The colored jacket helps with visual organization and faster maintenance tasks.

Suitable for

• Short-reach 100G connections between top-of-rack switches and servers
• Interconnects in high-density rack environments
• Patch connections between adjacent network appliances and storage systems
• Data center links where power efficiency and cost-effectiveness are priorities

Key specifications

• Interface: QSFP28 to QSFP28
• Length: 0.5 m
• Cable type: Direct Attach Copper (DAC)
• Data rate: 100 Gbps
• Connector gender: Plug-to-plug (copper assembly)
• Jacket color: Blue
• Typical use: Short-reach, within-rack or adjacent-rack interconnect

How to use

Plug each QSFP28 connector firmly into the corresponding QSFP28 port on your switch, server or appliance until the latch engages. Ensure both devices support passive DAC connections and are configured for 100G operation. Route the 0.5 m cable to avoid sharp bends; maintain manufacturer-recommended bend radius for copper assemblies. If replacing an active transceiver link, verify port settings and link status after installation to confirm the 100G link is established and stable.

Usage recommendations

Inspect connectors for debris or damage before installation, and avoid excessive bending or pulling on the cable. Use the blue jacket for consistent rack labeling and document the connection in your network inventory. For deployments requiring longer reach or optical isolation, consider active optical solutions instead of a DAC.